C++
how can I fix these errors
this is my code
main.cpp
#include "SpecialArray.h"
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int measureElementsPerLine(ifstream& inFile) {
// Add your code here.
string line;
getline(inFile, line);
int sp = 0;
for (int i = 0; i < line.size(); i++)
{
if (line[i] == ' ')
sp++;
}
sp++;
return sp;
}
int measureLines(ifstream& inFile) {
// Add your code here.
string line;
int n = 0;
while (!inFile.eof())
{
getline(inFile, line);
n++;
}
return n;
}
int main()
{
int numOfLines, numOfElements;
string fileName, dataType;
cin >> fileName >> dataType;
ifstream inFile(fileName);
// Add try statement below
try
{
if (inFile.fail())
throw "File does not exist.";
numOfElements =
measureElementsPerLine(inFile);
inFile.close();
inFile.open(fileName);
numOfLines =
measureLines(inFile);
if (numOfLines == 0)
throw "File is
empty";
inFile.close();
if (dataType == "int") {
SpecialArray<int> specialArray(numOfLines,
numOfElements);
inFile.open(fileName);
specialArray.readFile(inFile);
inFile.close();
specialArray.print();
specialArray.sort();
cout <<
"\nSorted outputs: \n";
specialArray.print();
}
else if (dataType == "string")
{
SpecialArray<string> specialArray(numOfLines,
numOfElements);
inFile.open(fileName);
specialArray.readFile(inFile);
inFile.close();
specialArray.print();
specialArray.sort();
cout <<
"\nSorted outputs: \n";
specialArray.print();
}
}
// Add catch statement below
catch (const char *msg)
{
cout << msg << endl;
return -1;
}
return 0;
}
SpecialArray.h
#ifndef SpecialArray_H
#define SpecialArray_H
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
// Add your function declarations and definitions here. With template classes, it is recommended to put them in the same file.
template <class T>
class SpecialArray
{
private:
T **arr;
int rows;
int cols;
public:
SpecialArray()
{
rows = 0;
cols = 0;
arr = NULL;
}
SpecialArray(int r, int c)
{
rows = r;
cols = c;
arr = new T*[r];
for (int i = 0; i < r; i++)
arr[i] = new T[c];
}
~SpecialArray()
{
for (int i = 0; i < rows; i++)
delete[] arr[i];
delete arr;
rows = 0;
cols = 0;
}
void readFile(ifstream &in)
{
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
in >> arr[i][j];
}
}
}
T max()
{
T temp = arr[0][0];
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
if (arr[i][j] > temp)
temp = arr[i][j];
}
}
return temp;
}
T min()
{
T temp = arr[0][0];
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
if (arr[i][j] < temp)
temp = arr[i][j];
}
}
return temp;
}
void sort()
{
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
for (int k = j + 1; k < cols; k++)
{
if (arr[i][j] > arr[i][k])
{
T temp = arr[i][j];
arr[i][j] = arr[i][k];
arr[i][k] = temp;
}
}
}
}
}
void print()
{
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
cout << arr[i][j];
if (j != cols - 1)
cout << " ";
}
cout << endl;
}
}
void saveToFile()
{
ofstream out;
out.open("output.txt");
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
out << arr[i];
if (j != cols - 1)
out << " ";
}
out << endl;
}
out.close();
}
};
#endif
: Running default main.cpp to ensure input1.txt is properly read into/printed from SpecialArray class 0/10 Input inputl.txt int 1 234 8765 9 10 11 12 16 15 14 13 17 18 19 20 Your output Sorted outputs: 1 234 5 678 9 10 11 12 13 14 15 16 17 18 19 20 1 23 4 8765 Your output does not 9 10 11 12 LO LI contain 16 15 14 13 17 18 19 20
Homework Answers
Solution:
Note : The error is due to the no.of lines read in the input file. In the above code it reads an extra one empty line. Following contains the modified code.
Code:
main.cpp:
#include "SpecialArray.h"
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int measureElementsPerLine(ifstream& inFile) {
// Add your code here.
string line;
getline(inFile, line);
int sp = 0;
for (int i = 0; i < line.size(); i++)
{
if (line[i] == ' ')
sp++;
}
sp++;
return sp;
}
int measureLines(ifstream& inFile) {
// Add your code here.
string line;
int n = 0;
while (!inFile.eof())
{
getline(inFile, line);
n++;
}
return (n-1);
//Modification 7
}
int main()
{
int numOfLines, numOfElements;
string fileName, dataType;
cout<<"\nEnter filename : ";
//Modification 1
cin >> fileName;
cout<<"\nEnter datatype : ";
//Modification 2
cin >> dataType;
ifstream inFile(fileName.c_str());
//Modification 3
// Add try statement below
try
{
if (inFile.fail())
throw "File does
not exist.";
numOfElements =
measureElementsPerLine(inFile);
inFile.close();
inFile.open(fileName.c_str()); //Modification 4
numOfLines =
measureLines(inFile);
if (numOfLines == 0)
throw "File is
empty";
inFile.close();
if (dataType == "int") {
SpecialArray<int> specialArray(numOfLines,
numOfElements);
inFile.open(fileName.c_str()); //Modification 5
specialArray.readFile(inFile);
inFile.close();
specialArray.print();
specialArray.sort();
cout <<
"\nSorted outputs: \n";
specialArray.print();
}
else if (dataType == "string")
{
SpecialArray<string> specialArray(numOfLines,
numOfElements);
inFile.open(fileName.c_str()); //Modification 6
specialArray.readFile(inFile);
inFile.close();
specialArray.print();
specialArray.sort();
cout <<
"\nSorted outputs: \n";
specialArray.print();
}
}
// Add catch statement below
catch (const char *msg)
{
cout << msg <<
endl;
return -1;
}
return 0;
}
---------------------------------------
SpecialArray.h:
#ifndef SpecialArray_H
#define SpecialArray_H
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
// Add your function declarations and definitions here. With
template classes, it is recommended to put them in the same
file.
template <class T>
class SpecialArray
{
private:
T **arr;
int rows;
int cols;
public:
SpecialArray()
{
rows = 0;
cols = 0;
arr =
NULL;
}
SpecialArray(int r, int c)
{
rows = r;
cols = c;
arr = new
T*[r];
for (int i = 0;
i < r; i++)
arr[i] = new T[c];
}
~SpecialArray()
{
for (int i = 0;
i < rows; i++)
delete[] arr[i];
delete
arr;
rows = 0;
cols = 0;
}
void readFile(ifstream
&in)
{
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
in >> arr[i][j];
}
}
}
T max()
{
T temp =
arr[0][0];
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
if (arr[i][j] >
temp)
temp =
arr[i][j];
}
}
return
temp;
}
T min()
{
T temp =
arr[0][0];
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
if (arr[i][j] <
temp)
temp =
arr[i][j];
}
}
return
temp;
}
void sort()
{
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
for (int k = j + 1; k <
cols; k++)
{
if
(arr[i][j] > arr[i][k])
{
T temp = arr[i][j];
arr[i][j] = arr[i][k];
arr[i][k] = temp;
}
}
}
}
}
void print()
{
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
cout <<
arr[i][j];
if (j != cols - 1)
cout
<< " ";
}
cout << endl;
}
}
void saveToFile()
{
ofstream
out;
out.open("output.txt");
for (int i = 0;
i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
out << arr[i];
if (j != cols - 1)
out
<< " ";
}
out << endl;
}
out.close();
}
};
#endif
----------------------------------------------------------------
Output:
------------------------------------------------------------------------------------------
Please comment if you have any queries on this solution..
Kindly up-vote if you are satisfied with this solution.
Add Answer to:
C++ how can I fix these errors this is my code main.cpp #include "SpecialArray.h" #include <...
Question 1: Fix the 2D dynamic array initialization in following code #include <iostream> using namespace std;...
Question 1: Fix the 2D dynamic array initialization in following code #include <iostream> using namespace std; int main(){ int rows = 5; int cols = 5; int x; int** arr = new int[rows][cols] cin >> x; arr[x][x] = x; cout << "arr[x][x] = " << arr[x][x]; return 0; } Question 2: Fix the code to initialize the 2D array elements to x #include <iostream> using namespace std; int main(){ int rows; int cols; int x;...
Hello, I need help with my code. The code needs to display random number from 1...
Hello, I need help with my code. The code needs to display random number from 1 to 50 every time the program runs but the program displays the same random numbers every time. Thanks #include #include using namespace std; void dynAlloc(int size, int *&arr); void displayArray(int *arr, int n); void insertionSort(int *arr, int n, int *temp); void linear_search(int *arr, int n, int key); void binary_search(int *arr, int n, int key); int main() { const int n = 50; int *arr,...
I need help fixing my code: In C++ *************** 1) I want to sum the digits...
I need help fixing my code: In C++ *************** 1) I want to sum the digits of an n*n matrix 2) find the average I have completed the rest ****Do not use C++ standard library. You must use pointers and pointer arithmetic to represent the matrix and to navigate through it. MY CODE: (I have indicated at which point I need help) #include <iostream> using namespace std; void swap(int *xp, int *yp) { int temp = *xp; *xp = *yp;...
How can I fix that ? Can you please explain clearly ? main.cpp 2 3 using...
How can I fix that ? Can you please explain clearly ?
main.cpp 2 3 using namespace 4. 5 int main() std; unsigned int x = 0b01101100; 8 9 10 12 13 14 15 16 17 18 19 20 21 unsigned int z = 0x12345678; unsigned int e 0x7; unsigned int w = 0x87654321; unsigned int =0x123; int 1; int 92; int Q3; int Q4; Q1=x&y; cout << bitset<8> (Q1) << endl; Q2=-(x| y); cout << bitset<8>(Q2) << endl; Q3=(z...
Hi there! I need to fix the errors that this code is giving me and also...
Hi there! I need to fix the errors that this code is giving me and also I neet to make it look better. thank you! #include <iostream> #include <windows.h> #include <ctime> #include <cstdio> #include <fstream> // file stream #include <string> #include <cstring> using namespace std; const int N=10000; int *freq =new int [N]; int *duration=new int [N]; char const*filename="filename.txt"; int songLength(140); char MENU(); // SHOWS USER CHOICE void execute(const char command); void About(); void Save( int freq[],int duration[],int songLength); void...
I have 2 issues with the C++ code below. The biggest concern is that the wrong...
I have 2 issues with the C++ code below. The biggest concern is that the wrong file name input does not give out the "file cannot be opened!!" message that it is coded to do. What am I missing for this to happen correctly? The second is that the range outputs are right except the last one is bigger than the rest so it will not output 175-200, it outputs 175-199. What can be done about it? #include <iostream> #include...
Can some one fix my code so that the output result same as below? BAR PLOT...
Can some one fix my code so that the output result same as below? BAR PLOT OF CYLINDER PRESSURE -VS- TIME pressure is on horizontal axis - units are psi time is on vertical axis - units are msec 0.0 20.0 40.0 60.0 80.0 100.0 120.0 +---------+---------+---------+---------+---------+---------+ 0.0|************************* 1.5|********************************* 3.0|***************************************** 4.4|************************************************** 05.9|********************************************* 7.4|******************************** 8.9|*********************** 10.4|***************** 11.9|************** 13.3|************* 14.8|************ 16.3|********* 17.8|******* 19.3|****** 20.7|****** 22.2|******* 23.7|******* .......... ===================== her is my code //#include"stdafx.h" #include #include #include #include #include #include using...
Would somebody be able to assist me with this C++ problem ? E. What would the...
Would somebody be able to assist me with this C++ problem
?
E. What would the code segment in Listing 4 output when it is executed? Listing 4: Code Segment 1 const int ROWS = 2; 2 const int COLS = 3; 3 int x[ROWS] [COLS] = {{2,3,5}, {7,11 , 13}}; 4 int i, j; 5 for (j=0; j<COLS; j++) 6 { cout <<"Column"<<j +1 <<": "; for (i=0; i<ROWS; i++) 11 cout <<x[i][j]<<" "; } cout <<endl; 13 }
Can you tell me what is wrong and fix this code. Thanks #include <iostream> #include <string>...
Can you tell me what is wrong and fix this code. Thanks #include <iostream> #include <string> #include <fstream> #include <sstream> using namespace std; //function void displaymenu1(); int main ( int argc, char** argv ) { string filename; string character; string enter; int menu1=4; char repeat; // = 'Y' / 'N'; string fname; string fName; string lname; string Lname; string number; string Number; string ch; string Displayall; string line; string search; string found; string document[1000][6]; ifstream infile; char s[1000];...
How do I compile c++ code in terminal. Below i have some code to apply Gaussian...
How do I compile c++ code in terminal. Below i have some code to
apply Gaussian Filter on an image using OpenCV. I have tried
compling using the code
g++ Project2.cpp -o Project2 `pkg-config --cflags --libs opencv`
&& ./Project2
and it gives me a whole list of errors saying directory not
found.
---------------------------------------------------------------------------------------------------------
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <opencv2/core/core.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main()
{
Mat image = imread("//u//oowens//First.jpg");
int rows=image.rows;
int cols=image.cols;
if (image.empty())...
How can I fix that ? Can you please explain clearly ?
main.cpp 2 3 using namespace 4. 5 int main() std; unsigned int x = 0b01101100; 8 9 10 12 13 14 15 16 17 18 19 20 21 unsigned int z = 0x12345678; unsigned int e 0x7; unsigned int w = 0x87654321; unsigned int =0x123; int 1; int 92; int Q3; int Q4; Q1=x&y; cout << bitset<8> (Q1) << endl; Q2=-(x| y); cout << bitset<8>(Q2) << endl; Q3=(z...
Would somebody be able to assist me with this C++ problem
?
E. What would the code segment in Listing 4 output when it is executed? Listing 4: Code Segment 1 const int ROWS = 2; 2 const int COLS = 3; 3 int x[ROWS] [COLS] = {{2,3,5}, {7,11 , 13}}; 4 int i, j; 5 for (j=0; j<COLS; j++) 6 { cout <<"Column"<<j +1 <<": "; for (i=0; i<ROWS; i++) 11 cout <<x[i][j]<<" "; } cout <<endl; 13 }
How do I compile c++ code in terminal. Below i have some code to
apply Gaussian Filter on an image using OpenCV. I have tried
compling using the code
g++ Project2.cpp -o Project2 `pkg-config --cflags --libs opencv`
&& ./Project2
and it gives me a whole list of errors saying directory not
found.
---------------------------------------------------------------------------------------------------------
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <opencv2/core/core.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main()
{
Mat image = imread("//u//oowens//First.jpg");
int rows=image.rows;
int cols=image.cols;
if (image.empty())...
Most questions answered within 3 hours.
-
On January 1, 2017, Nicks Corporation issued $250 million of
floating-rate debt. The debt carries a...
asked 11 minutes ago -
If Mark is unable to see objects clearly when they are placed
beyond 0.5m away, (a)...
asked 8 minutes ago -
Where there is no course of performance, usage of trade, or
course of dealing, and where...
asked 10 minutes ago -
A piece of charcoal (essentially 100% carbon) from an
archaeological site in Egypt is subjected to...
asked 25 minutes ago -
7) A) Balance the following reaction:
__H2SO4 + __NaOH __Na2SO4 + __H2O
b) Classify the...
asked 27 minutes ago -
Planets X, Y, and Z have circular orbits around a Star, which is
similar to our...
asked 36 minutes ago -
Use case analysis is used to ____
a) communicate system requirements
b) implement the system
c)...
asked 34 minutes ago -
What is the equilibrium constant for the reaction below, given
the listed concentrations at equilibrium? Report...
asked 37 minutes ago -
The following account appears in the ledger prior to recognizing
the jobs completed in August:
Work...
asked 38 minutes ago -
Air contained in a piston-cylinder undergoes two processes in
series. In the first the air expands...
asked 43 minutes ago -
Propose a circuit that has an effective resistance of 6666ohms.
Include drawing.
asked 52 minutes ago -
Starting with a given fatty acid: C22:6 w-3 go through the
process of beta oxidation. begin...
asked 52 minutes ago