Question

Write a menu based program implementing the following functions:

(0) Write a function called displayMenu that does not take any parameters, but returns an integer representing your user's menu choice. Your program's main function should only comprise of the following:

• a do/while loop with the displayMenu function call inside the loop body
• switch/case, or if/else if/ ... for handling the calls of the functions based on the menu choice selected in displayMenu.
• the do/while loop should always continue as long as the user does not choose to quit the program.

(1) Write a function that prompts the user for the name of a file to output as a text file that will hold a two dimensional array of the long double data type.

Have the program prompt the user to enter the number of rows and the number of columns for the two dimensional array.

Have the program prompt the user to enter the values for each row and column element in the two dimensional array.

Write the two dimensional array out as a text file. You will want the file format to be as follows:

• First line contain the string: "UNSORTED"
• The first two values stored in the file is the number of rows and the number of columns.
• The remaining data is to be the two dimensional array being stored as long double typed values.

(2) Write a function like function #1, except this time, instead of asking the user for the values for each row and column element, have the function create a randomly generated values for the number of rows and columns (a minimum of 2 rows and a minimum of 2 columns, and a maximum of 10 rows and a maximum of 10 columns). Have the function that prompt the user for the name of a file to output as a text file the randomly generated values of type long double between the numbers 0 and 1, including fractional values in between such as (0.54734824682, etc).

Hint: you may want to have your program generate two random numbers and divide the smaller of the two random numbers into the larger random number.

You will want the file format to be as follows:

• First line contain the string: "UNSORTED"
• The first two values stored in the file is the number of rows and the number of columns.
• The remaining data is to be the two dimensional array being stored as long double typed values.

(3) Write a function to prompt the user for the name of a file to input as a text file to read in the two dimensional array of long double type.

Output the contents of the two dimensional array to the screen.

(4) Write a function to prompt the user for the name of a file to input as a text file to read in the two dimensional array of the long double type and another filename for the name of the output file that will be outputting the two dimensional array after it has been sorted.

Load in the data from the original text file and ask the user which column would they like to sort by utilizing bubble sort.

Sort the two dimensional array based on the column the user specifies and by the sort order the user would like to sort (prompt the user, asking if they would like to sort the column from smallest to largest, or largest to smallest), and output the sorted two dimensional array to the output filename.

You will want the file format of the output sorted file to be as follows:

• First line contain the string: "SORTED"
• The first two values stored in the file is the number of rows and the number of columns.
• Sorted Column (this is the column number of the sorted column)
• Sort Order (this is a flag for what order is the sorted column sorted by)
• The remaining data is to be the two dimensional array being stored as long double typed values.

(5) Write a function to prompt the user for the name of a text file to read in the two dimensional array of long double data type.

Load in the data for the two dimensional array

Prompt the user to enter the column they wish to search by (check to make sure the file is "marked" as "SORTED" - if the file is marked as "UNSORTED" do not allow a binary search to be done, but rather in this case, utilize linear search), and the value to find. Implement the binary search algorithm to find the value (remember, the column they specify must be sorted or binary search may not always work). You will have to come up with some technique to be able to determine if the user has the column sorted in smallest to largest, or largest to smallest sort order in order to use binary search correctly (the algorithm in class only works for sorted data that is sorted from smallest to largest)

c++

Answer 1

All the explanation is in the code comments. Hope this helps!

Code:

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include<time.h>
#include <iomanip> // std::setprecision

using namespace std;

// (0) function does not take any parameters
// returns an integer representing your user's menu choice
int displayMenu()
{
int choice;
  
while(true)
{
cout << "Menu ----------------------- " << endl;
cout << "Choose 0 to exit" << endl;
cout << "Choose a function from 1 to 5" << endl;
cin >> choice;
  
// return valid user input
if(choice>=0 && choice<=5)
return choice;
}
}

// (1) function
void function1()
{
// required variables
string filename;
int rows, cols;
long double val;
  
// prompt the user for the name of a file to output as a text file
// that will hold a two dimensional array of the long double data type.
cout << "Enter name of output file: ";
cin >> filename;
  
// open file
ofstream fout;
fout.open (filename);
  
fout << "UNSORTED" << endl; // 1st line in file
  
// prompt the user to enter the number of rows
// and the number of columns for the two dimensional array.
cout << "Enter number of rows: ";
cin >> rows;
cout << "Enter number of columns: ";
cin >> cols;
  
fout << rows << " " << cols << endl; // 2nd line
  
// prompt the user to enter the values for each row
// and column element in the two dimensional array.
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
{
cout << "Enter value for (" << i << ", " << j << ") cell: ";
cin >> val;
fout << std::setprecision(15) << val << " "; // write value to file
}
fout << endl;
}
  
// close file
fout.close();
}

// (2) function
void function2()
{
// required variables
string filename;
int rows, cols;
long double val;
  
// prompt the user for the name of a file to output as a text file
cout << "Enter name of output file: ";
cin >> filename;
  
// open file
ofstream fout;
fout.open (filename);
  
fout << "UNSORTED" << endl; // 1st line in file
  
// Use current time as seed for random generator
srand(time(0));
// generate the number of rows and the number of columns
// for the two dimensional array. (between 2 and 10)
rows = rand() % 9 + 2;
cols = rand() % 9 + 2;
  
fout << rows << " " << cols << endl; // 2nd line
  
// prompt the user to enter the values for each row
// and column element in the two dimensional array.
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
{
long double a = (double)rand() / (double)(RAND_MAX);
long double b = (double)rand() / (double)(RAND_MAX);
  
// divide the smaller number by larger number
if(a<b)
val = a/b;
else
val = b/a;
  
fout << std::setprecision(15) << val << " "; // write value to file
}
fout << endl;
}
  
// close file
fout.close();
}

// (3) function
void function3()
{
// required variables
string filename, temp;
int rows, cols;
long double val;
  
// prompt the user for the name of a file to input as a text file
// to read in the two dimensional array of long double type.
cout << "Enter name of input file: ";
cin >> filename;
  
// open file
ifstream fin(filename);
if (fin.is_open())
{
fin >> temp;
  
// read rows and columns number
fin >> rows >> cols;
  
// read values
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
{
fin >> val;
cout << std::setprecision(15) << val << " "; // print contents
}
cout << endl;
}
// close file
fin.close();
}
else cout << "Unable to open file";
}

// (4) function
void function4()
{
// required variables
string f1, f2, temp;
int rows, cols, colNumber, sortOrder;
// declare a matrix
long double arr[10][10];
  
// prompt the user for the name of a file to input as a text file
// to read in the two dimensional array of the long double type
cout << "Enter name of input file: ";
cin >> f1;
// another filename for the name of the output file
// that will be outputting the two dimensional array after it has been sorted
cout << "Enter name of output file: ";
cin >> f2;
  
// open input file
ifstream fin(f1);
if (!fin.is_open())
{
cout << "Unable to open file";
return;
}
  
fin >> temp;
  
// read rows and columns number
fin >> rows >> cols;
  
// read values
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
fin >> arr[i][j];
}
// close file
fin.close();
  
// ask the user which column would they like to sort by utilizing bubble sort
cout << "Which column would you like to sort: ";
cin >> colNumber;
  
// prompt the user asking the order of soring
cout << "Enter 0 to sort the column from smallest to largest or 1 for largest to smallest: ";
cin >> sortOrder;
  
// now sort the column
if(sortOrder) // descending
{
for (int i = 0; i < rows-1; i++)
{
// Last i elements are already in place
for (int j = 0; j < rows-i-1; j++)
if (arr[j][colNumber] < arr[j+1][colNumber])
{
// swap values
long double tmp = arr[j][colNumber];
arr[j][colNumber] = arr[j+1][colNumber];
arr[j+1][colNumber] = tmp;
}
}
}
else
{
for (int i = 0; i < rows-1; i++)
{
// Last i elements are already in place
for (int j = 0; j < rows-i-1; j++)
if (arr[j][colNumber] > arr[j+1][colNumber])
{
long double tmp = arr[j][colNumber];
arr[j][colNumber] = arr[j+1][colNumber];
arr[j+1][colNumber] = tmp;
}
}
}
  
// open file
ofstream fout;
fout.open (f2);
  
fout << "SORTED" << endl; // 1st line in file
  
fout << rows << " " << cols << endl; // 2nd line
  
fout << colNumber << endl; // 3rd line - Sorted Column
  
fout << sortOrder << endl; // 4th line - Sort Order (0 - ascending, 1 - descending)
  
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
{
fout << std::setprecision(15) << arr[i][j] << " "; // write value to file
}
fout << endl;
}
  
// close file
fout.close();
  
}

// (5) function
void function5()
{
// required variables
string filename, isSorted;
int rows, cols, colNumber, sortOrder, colSearch;
// declare a matrix
long double arr[10][10], x;
  
// prompt the user for the name of a file to input as a text file
// to read in the two dimensional array of long double type.
cout << "Enter name of input file: ";
cin >> filename;
  
// open input file
ifstream fin(filename);
if (!fin.is_open())
{
cout << "Unable to open file";
return;
}
  
fin >> isSorted;
  
// read rows and columns number
fin >> rows >> cols;
  
// if the file is sorted, then read 2 extra lines
if(isSorted == "SORTED")
{
fin >> colNumber;
fin >> sortOrder;
}
  
// read values
for(int i=0; i<rows; i++)
{
for(int j=0; j<cols; j++)
fin >> arr[i][j];
}
  
// close file
fin.close();
  
// Prompt the user to enter the column they wish to search by
cout << "Which column would you like to search in: ";
cin >> colSearch;
  
cout << "Enter value to find: ";
cin >> x;
  
// determine which search technique to use
if(isSorted == "SORTED" && colSearch == colNumber && sortOrder == 0)
{
// use binary search
cout << "Searching " << x << " using binary search" << endl;
  
int l = 0, r = rows-1, flag = 0;
  
while (l <= r) {
  
int m = l + (r - l) / 2;
  
// Check if x is present at mid
if (arr[m][colSearch] == x)
{
cout << x << " found at (" << m << ", " << colSearch << ")\n";
flag = 1;
break;
}
  
// If x greater, ignore left half
if (arr[m][colSearch] < x)
l = m + 1;
  
// If x is smaller, ignore right half
else
r = m - 1;
}
if(flag == 0)
cout << x << " not found\n";
}
else
{
// use linear search
cout << "Searching " << x << " using linear search" << endl;
  
int i;
for(i=0; i<rows; i++)
{
if(arr[i][colSearch] == x)
{
cout << x << " found at (" << i << ", " << colSearch << ")\n";
break;
}
}
if(i == rows)
cout << x << " not found\n";
}
}

// main function
int main()
{
// sample run
while(true)
{
// user's choice for menu
int choice = displayMenu();
  
if(choice == 0)
{
return 0;
}
else if(choice == 1)
{
function1();
}
else if(choice == 2)
{
function2();
}
else if(choice == 3)
{
function3();
}
else if(choice == 4)
{
function4();
}
else
{
function5();
}
}
  
return 0;
}

Sample run:

Menu Choose 0 to exit Choose a function from 1 to 5 Enter name of output file: a.txt Enter number of rows: 3 Enter number of columns: 2 Enter value for (0, 0) cell: 0.999 Enter value for (0, 1) cell: 0.214 Enter value for (1, 0) cell: 0.462898 Enter value for (1, 1) cell: 0.6 Enter value for (2, 0) cell: 0.01 Enter value for (2, 1) cell: 0.35 Menu --- ---- Choose 0 to exit Choose a function from 1 to 5 Enter name of output file: b.txt Menu ----- Choose 0 to exit Choose a function from 1 to 5 Enter name of input file: b.txt 0.0928973545645574 0.319105228651803 0.0372961207647387 0.622522767617788 0.756494726054279 0.509002423022909 0.121 906197460586 0.876348501268174 0.321656063933074 0.693066438177858 0.782463912651577 0.931502067187936 0.332371057868263 0.58015 8279112759 0.773917566521921 0.989744782474623 0.544182573672217 0.938189566228424 0.277992997999212 0.21577800587854 0.369347 837130187 0.54074954291377 0.378948379352863 0.822314327090794 0.255385720351231 0.485105638597389 0.965787661377907 0.390321 633556088 0.582329398474044 0.698066912485309 0.365795560040635 0.159259522831832 0.0483030852649017 0.495117011080664 0.2582 98786899355 0.663438315774694 0.291112300536903 0.819631611675862 0.210843300006677 0.0387001761768802 0.0112158894621208 0.415 74128564591 0.230622022451933 0.0988687512469047 0.897062220496684 0.261045653605311 0.464121053135909 0.568557189855855 0.7647 50529491757

0.627808777639908 0.923046516973276 0.423755155146275 0.294131695502033 0.674942041359895 0.441604382634508 0.92709 7244075428 0.377201934190569 0.242179507064906 0.243570341816931 0.804485427654421 0.897271366167651 0.543599985821629 0.25875 0426581681 0.233270545933367 0.223254570436852 0.77253945255931 0.742241490342933 0.0616115166239739 0.58279506955754 0.624598 698787784 Menu --- Choose 0 to exit Choose a function from 1 to 5 Enter name of input file: a.txt Enter name of output file: c.txt Which column would you like to sort: 0 Enter 0 to sort the column from smallest to largest or 1 for largest to smallest: 0 Menu Choose 0 to exit Choose a function from 1 to 5 Enter name of input file: c.txt Which column would you like to search in: 0 Enter value to find: 0.01 Searching 0.01 using binary search 0.01 found at (0, 0) Menu -- Choose 0 to exit Choose a function from 1 to 5 Enter name of input file: c.txt Which column would you like to search in: 1 Enter value to find: 0.6 Searching 0.6using linear search 0.6 found at (1, 1) Menu Choose 0 to exit Choose a function from 1 to 5

a.txt file

1 UNSORTED 2 3 2 0.999 0.214 4 0.462898 0.6 0.01 0.35

b.txt file

UNSORTED 10 7 0.0928973545645574 0.3191052286518e3 0.0372961207647387 0.622522767617788 0.756494726054279 e.509002423022909 0.121906197460586 0.876348501268174 0.321656063933074 0.693066438177858 0.782463912651577 0.931502067187936 0.332371057868263 0.580158279112759 0.773917566521921 0.989744782474623 0.544182573672217 0.938189566228424 0.277992997999212 0.21577800587854 0.369347837130187 6 0.54074954291377 0.378948379352863 0.822314327090794 0.255385720351231 0.485105638597389 e.965787661377907 0.390321633556088 7 0.582329398474044 0.698066912485309 0.365795560040635 e.159259522831832 0.0483030852649017 0.495117011080664 0.258298786899355 0.663438315774694 0.291112300536903 0.819631611675862 0.210843300006677 0.0387001761768802 0.0112158894621208 0.41574128564591 0.230622022451933 0.0988687512469047 0.897062220496684 0.261045653605311 0.464121053135909 0.568557189855855 0.764750529491757 10 e.627808777639908 0.923046516973276 0.423755155146275 0.294131695502033 0.674942041359895 0.441604382634508 0.927097244075428 11 0.377201934190569 0.242179507064906 0.243570341816931 0.804485427654421 0.897271366167651 0.543599985821629 0.258750426581681 12 0.233270545933367 0.223254570436852 0.77253945255931 0.742241490342933 0.0616115166239739 0.58279506955754 0.624598698787784 13

c.txt file

1 SORTED 2 3 2 4 0 5 0.01 0.214 6 0.462898 0.6 7 0.999 0.35 8.

Code screenshots:

#include <iostream> 2 #include <fstream> #include <stdlib.h> 4 #include<time.h> 5 #include <iomanip> // std::setprecision 7 using namespace std; 9 // (0) function does not take any parameters 10 // returns an integer representing your user's menu choice int displayMenu() 12- { 11 int choice; 13 14 while(true) { cout << "Menu cout <« "Choose 0 to exit" << endl; cout <« "Choose a function from 1 to 5" <« endl; cin >> choice; 15 16 <« endl; 17 18 19 20 21 // return valid user input if(choice>=0 && choice<=5) return choice; 22 23 24 25 26 } 27 28 // (1) function void function1() 30 - { 29 // required variables string filename; int rows, cols; long double val; 31 32 33 34 35 // prompt the user for the name of a file to output as a text file // that will hold a two dimensional array of the long double data type. cout <« "Enter name of output file: "; cin >> filename; 36 37 38 39 40

// open file ofstream fout; 41 42 fout.open (filename); 43 44 fout <« "UNSSORTED" <« endl; // 1st line in file 45 46 // prompt the user to enter the number of rows // and the number of columns for the two dimensional array. cout <« "Enter number of rows: "; cin >> rows; 47 48 49 50 cout << "Enter number of columns: cin >> cols; 51 52 53 fout <« rows « " " <« cols <« endl; // 2nd line 54 55 // prompt the user to enter the values for each row // and column element in the two dimensional array. for (int i-0; i<rows; i++) { for (int j-0; j«cols; j#) { cout <« "Enter value for (" « i « ", " « j« ") cell: "; cin >> val; fout <« std::setprecision (15) <« val « 56 57 58 59- 60 61- 62 63 ": // write value to file 64 65 fout <« endl; 66 67 68 // close file fout.close(); 69 70 71 } 72 // (2) function 73 void function2() 74 75- { // required variables string filename; int rows, cols; 76 77 78 long double val; 79 80

// prompt the user for the name of a file to output as a text file cout <« "Enter name of output file: "; cin >> filename; 81 82 83 84 // open file ofstream fout; 85 86 fout.open (filename); 87 88 fout <« "UNSORTED" <« endl; // 1st line in file 89 90 // Use current time as seed for random generator srand(time (0)); // generate the number of rows and the number of columns // for the two dimensional array. (between 2 and 10) rows = rand) % 9 + 2; cols = rand) % 9 + 2; 91 92 93 94 95 96 97 fout << rows <« cols <« endl; // 2nd line 98 99 // prompt the user to enter the values for each row // and column element in the two dimensional array. for (int i=0; i<rows; i++) { for (int j=0; j<cols; j++) { long double a = long double b 100 101 102 103- 104 105 (double) rand () / (double)(RAND_MAX); (double) rand () / (double) (RAND_MAX); 106 107 108 // divide the smaller number by larger number 109 if(a«b) val = 110 a/b; 111 else 112 val = b/a; 113 114 // write value to file fout « std::setprecision(15) « val 115 116 fout <« endl; 117 118 119 // close file 120

fout.close(); 121 122 } 123 124 // (3) function void function3() 125 126- { // required variables string filename, temp; int rows, cols; 127 128 129 long double val; 130 131 // prompt the user for the name of a file to input as a text file // to read in the two dimensional array of Long double type. cout <« "Enter name of input file: "; cin >> filename; 132 133 134 135 136 // open file ifstream fin(filename); if (fin.is_open()) { fin >> temp; 137 138 139 140 141 142 // read rows and columns number fin >> rows » cols; 143 144 145 // read values for (int i=0; i<rows; i++) { for(int j=0; j<cols; j#) { fin >> val; cout <« std::setprecision(15) <« val < " "; // print contents 146 147 148 149 150 151 152 153 cout <« endl; 154 155 // close file fin.close(); } else cout <« "Unable to open file"; 156 157 158 159 160 }

161 162 // (4) function void function4() 164 - { 163 // required variables string f1, f2, temp; int rows, cols, colNumber, sortOrder; // declare a matrix long double arr[1®][1®]; 165 166 167 168 169 170 // prompt the user for the name of a file to input as a text file // to read in the two dimensional array of the long double type cout <« "Enter name of input file: "; cin >> f1; // another filename for the name of the output file // that will be outputting the two dimensional array after it has been sorted cout <« "Enter name of output file: "; cin >> f2; 171 172 173 174 175 176 177 178 179 // open input file ifstream fin(f1); if (!fin.is_open()) { cout <« "Unable to open file"; 180 181 182 183 - 184 185 return; 186 187 fin >> temp; 188 189 // read rows and columns number fin >> rows >> cols; 190 191 192 // read values for (int i=0; i<rows; i++) { for (int j=0; j«cols; j++) 193 194 195 196 fin >> arr[i][j]; 197 198 // close file fin.close(); 199 200

201 // ask the user which column would they like to sort by utilizing bubble sort cout <« "Which column would you like to sort: "; cin >> colNumber; 202 203 204 205 // prompt the user asking the order of soring cout <« "Enter 0 to sort the column from smallest to largest or cin >> sortOrder; 206 1 for largest to smallest: 207 208 209 // now sort the column if(sortorder) { for (int i 210 // descending 211 212- 0; i < rows-1; i+) 213 214 // Last i elements are already in place for (int j = 0; j < rows-i-1; j+) 215 216 if (arr[j][colNumber] < arr[j+1][colNumber]) { // swap values long double tmp arr[j][colNumber] = arr[j+1][colNumber]; arr[j+1][colNumber] = tmp; 217 218- 219 arr[j][colNumber]; 220 221 222 223 224 } else 225 226 { 227 for (int i = 0; i < rows-1; i++) { // Last i elements are already in place for (int j = 0; j < rows-i-1; j+) if (arr[j][colNumber] > arr[j+1][colNumber]) 228 %3D 229 230 231 232 233 long double tmp arr[j][colNumber] = arr[j+1][colNumber]; arr[j+1][colNumber] arr[j][colNumber]; 234 235 236 tmp; %3D 237 238 239 240

// open file ofstream fout; 241 242 fout.open (f2); 243 244 fout <« "SORTED" << endl; // 1st line in file 245 246 fout <« rows « " " <« cols « endl; // 2nd line 247 248 fout <« colNumber <« endl; // 3rd line - Sorted Column 249 250 Sort Order (0 - ascending, 1 fout <« sortOrder << endl; // 4th line descending) 251 252 for (int i-0; i<rows; i++) { for(int j=0; j<cols; j#) { fout « std::setprecision(15) « arr[i][j] 253 254 - 255 256 ": // write value to file 257 258 fout <« endl; 259 260 261 // close file fout.close(); 262 263 264 265 } 266 267 // (5) function void function5() 269 - { 268 // required variables string filename, isSorted; int rows, cols, colNumber, sortOrder, colSearch; // declare a matrix long double arr[1®][1®], x; 270 271 272 273 274 275 // prompt the user for the name of a file to input as a text file // to read in the two dimensional array of long double type. 276 277 cout <« "Enter name of input file: "; cin >> filename; 278 279 280

// open input file ifstream fin(filename); if (!fin.is_open()) { cout <« "Unable to open file"; return; 281 282 283 284- 285 286 287 288 fin >> isSorted; 289 290 // read rows and columns number 291 fin >> rows >> cols; 292 293 // if the file is sorted, then read 2 extra lines if(isSorted { fin >> colNumber; fin >> sortorder; 294 = "SORTED") 295 296 297 298 299 300 // read values for (int i=0; i<rows; i++) { for(int j=0; j<cols; j+) 301 302 303 304 fin > arr[i][j]; 305 306 307 // close file fin.close(); 308 309 310 // Prompt the user to enter the column they wish to search by cout <« "Which column would you like to search in: "; cin >> colSearch; 311 312 313 314 cout <« "Enter value to find: "; cin >> x; 315 316 317 // determine which search technique to use if(isSorted { 318 e) "SORTED" && colsearch == colNumber && sortOrder == 319 320-

// use binary search cout <« "Searching 321 using binary search" << endl; <<х << 322 323 int 1 = 0, r = rows-1, flag 324 0; 325 while (1 <= r) { 326 327 1 + (r - 1) / 2; int m = 328 329 // Check if x is present at mid if (arr[m][colSearch] == x) 330 331 332 « colSearch <« ")\n"; cout <« x << " found at (" <« m flag break; 333 334 = 1; 335 336 337 // If x greater, ignore left half if (arr[m][colsearch] < x) 1 = m + 1; 338 339 340 341 // If x is smalLler, ignore right half 342 else 343 344 1; 345 if(flag 346 not found\n"; << x << 347 cout 348 else 349 { // use linear search cout « "Searching 350 351 <« x « " using linear search" <« endl; 352 353 int i; 354 for (i=0; i<rows; i++) 355 356 if(arr[i][colSearch] x) 357 358- colsearch <« ")\n"; cout <« x « " found at (" « i « ", · break; 359 360

361 362 if(i rows) 363 cout << x << " not found\n" 364 365 366 } 367 368 // main function int main() 370 - { 369 // sample run while(true) { // user's choice for menu 371 372 373- 374 displayMenu(); int choice 375 376 if(choice { return 0; ®) 377 378 379 380 = 1) else if(choice { function1(); 381 382 383 384 else if(choice { function2(); 2) 385 386 387 388 else if(choice { function3(); } else if(choice { function4(); = 3) 389 390 - 391 392 4) 393 394 395 396 else 397 398 - { function5(); 399 400

401 402 return 0; 403 404