Question

Does any one can show me the code in C++

ll cricket LTE 80% 16:58 Back P2.B MYString v1 Detail Submission Grade For this program, your MYString variables will never need to grow beyond length 20, in program 3 you will need to be allow your string that is held in the class to be able to be larger than 20 chars. So you may want to start allowing your strings to be able to grow....if you have extra time. If you are optionally building in the ability to grow, it should start witha capacity of 20, but when needed it would grow in increments of 20. The capacity should always be a multiple of 20 For example if we were storing the string "cat" in a MYString object, our data member would have the following values starting addr of dynamic array str cap 20 end3 Dynamic array: at o 2222 P 222 2PP22? са

Answer 1

#include <iostream>

#include <iomanip>

#include <fstream>

#include <cstring>

#include <cstdlib>

#include <vector>

using namespace std;

// Defines a class MyString

class MyString

{

// Data member to store data

char *str;

int cap;

int end;

public:

// Default constructor to assign default values to data member

MyString()

{

cap = 20;

str = new char[cap];

end = 0;

}// End of default constructor

// Parameterized constructor to assign parameter values to data member

MyString(const char *newStr)

{

cap = strlen(newStr);

str = new char[cap];

end = 0;

}// End of parameterized constructor

// Function to return length

int length()

{

return strlen(str);

}// End of function

// Function to return capacity

int capacity()

{

return cap;

}// End of function

// Function to return character at given index position

char at(int index)

{

return str[index];

}// End of function

// Function to read the file and return true for success

// returns false for not success

bool read(istream &istrm)

{

// Declares a character array with size 100

char arr[100];

// Reads a string from file

if(istrm>>arr)

{

// Copies the string to data member

strcpy(str, arr);

// Increase end counter by one

end++;

return true;

}// End of if condition

// Otherwise returns false

else

return false;

}// End of function

// Function to write the strings to file

void write(ostream &ostrm)

{

// Declares a static variable for number of words to print in a line

static int c = 1;

// If c value is divisible by 6 then

// writes the string with 13 spaces with new line

if(c % 6 == 0)

ostrm<<setw(13)<<str<<endl;

// Otherwise c value is not divisible by 6 then

// writes the string with 13 spaces with out new line

else

ostrm<<setw(13)<<str;

// Increase the counter by one

c++;

}// End of function

// Function to display the strings

void show(MyString arr[], int len)

{

// Loops till length of the array

for(int c = 1; c <= len; c++)

// If c value is divisible by 6 then

// display the string with 13 spaces with new line

if(c % 6 == 0)

cout<<setw(13)<<arr[c-1].str<<endl;

// Otherwise c value is not divisible by 6 then

// display the string with 13 spaces with out new line

else

cout<<setw(13)<<arr[c-1].str;

}// End of function

// Function to sort the strings

void sortMyString(MyString arr[], int len)

{

// Loops till length of the array

for(int c = 0; c < len; c++)

{

// Loops till length of the array minus outer loop variable value minus one

// Length minus out loop variable because after each iteration one record is sored

// minus one because numbers are compared in pair

for(int d = 0; d < len - c - 1; d++)

{

// Checks if the number stored at d index position is greater than

// number stored at next index position

if(strcmp(arr[d].str, arr[d + 1].str) > 0)

{

// Swapping process

MyString temp = arr[d];

arr[d] = arr[d + 1];

arr[d + 1] = temp;

}// End of if condition

}// End of inner for loop

}// End of outer for loop

}// End of function

};// End of class

// main function definition

int main()

{

// Declares an array of MyString of size 100

MyString arr[100];

// Record counter

int c = 0;

// ifstream object declared

ifstream fRead;

// ofstream object declared

ofstream fWrite;

// Opens the file for reading

fRead.open("infile2.txt");

// Opens the file for writing

fWrite.open("outfile.txt", ios::app);

// Checks if the file unable to open for reading display's error message and stop

if(!fRead)

{

cout<<"\n ERROR: Unable to open the file for reading.";

exit(0);

}// End of if condition

// Loops till end of the file

while(!fRead.eof())

{

// Calls the function to read data from file

// and stores it at c index position

// Increase the counter by one

arr[c++].read(fRead);

}// End of while loop

// Calls the function to sort

arr[0].sortMyString(arr, c);

// Checks if the file unable to open for write display's error message and stop

if(!fWrite)

{

cout<<"\n ERROR: Unable to open the file for writing.";

exit(0);

}// End of if condition

// Loops till number of strings

for(int x = 0; x < c; x++)

// Calls the function to write

arr[x].write(fWrite);

// Calls the function to display

arr[0].show(arr, c);

return 0;

}// End of main function

Sample Output:

FATODA2019Uan MyString.exe all whose Press any key to continue. changes of you demo dynamic string for this handle to size Process returned θ (0x0) execution time : 0.069 s

infile2.txt file contents

this
is
a
demo
for
all
of
you
to
handle
dynamic
string
whose
size
changes

outfile.txt file contents

a all changes demo dynamic for
handle is of size string this
to whose you