no error of compilation but my code makes codeblocks bug

Hi everybody, something may be wrong in my code even if there are no errors of compilation. But i don't know why!
Any help would be greatly appreciated.
My code :

Code:

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#include <iostream>#include <iomanip>
#include <cstdlib>


using namespace std;




void initArray(float largeArray[6][6]){
    for (int x=0; x < 6; x++){
            for (int y=0; y<6; y++){
                  largeArray[x][y] = 0;
        }
    }




}




float printOutArray(float largeArray[6][6]){
    for (int x = 0; x < 6; x++){




            for (int y = 0; y < 6; y++){
                    cout << largeArray [x] [y]<<'\t';
                }
          cout << endl;
        }
return largeArray[6][6];
}


float tata (int degree_denominator, float largeArray[6][6] )
{
float array_of_coefficients[6];
int c=0;
int l=0;
int x;
for (x=degree_denominator ; x>=0 ; x--){
                                        if (l==2){l=0;c++;}
                              cout << "what is the coefficient linked with degree" << x << "?" << endl;
                              cin >> array_of_coefficients[x];
                              largeArray[l][c] = array_of_coefficients[x];
                              l++;
                              }


 return largeArray[6][6];
}




float toto(float largeArray[6][6])
{
float finalArray[9][9] = {0};
int u = 0;
int v = 0;
int line = 0;
int i = 0;
int r = line - 2;
int s = line - 1;
int f = i + 1;


for (u = 0; u <= 1 ; u ++){
                for (v = 0; v<=9; v++){
                                finalArray[u][v] = largeArray[u][v];
                }
  }


for (line = 2; line <= 9 ; line ++){
        for (i = 0; i<=9; i++){
                                finalArray[line][i] = ((finalArray[r][f]) - ( ( finalArray[s][f] ) * ( (finalArray[r][i])/ (finalArray[s][i])) ) ) ;
                                }
                      }
return finalArray[9][9];
}






float printOutArray2(float finalArray[9][9]){
    for (int x = 0; x <= 9; x++){




            for (int y = 0; y <= 9; y++){
                    cout << finalArray [x] [y]<<'\t';
                }
          cout << endl;
        }
return finalArray[9][9];
}




int main()
{
    float finalArray [9][9];
    float largeArray [6][6];
    initArray(largeArray);
    printOutArray(largeArray);
    int degree_denominator;
    cout << "what is the degree of the denominator?" << endl;
    cin >> degree_denominator;
    tata(degree_denominator, largeArray);
    printOutArray(largeArray);
    toto(largeArray);
    cout << "final array:" << endl;
    printOutArray2(finalArray);
    system("PAUSE");


}

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Codeblocks stops to work when i run this code, can someone tell me why?

Quote:

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Originally Posted by funnydarkvador

Codeblocks stops to work when i run this code, can someone tell me why?

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My guess is it is because you keep trying to return memory that you do NOT own.

This is one of the times you did it.

Code:

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return largeArray[6][6];

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Another time.

Code:

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return finalArray[9][9];

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Code:

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float finalArray[9][9] = {0};

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The above code declares an 9 by 9 array; this mean the last float is finalArray[8][8].
The element finalArray[9][9] is NOT part of the array and when you use it; the computer could react in any way;
This includes deleting all your software or crashing.

Tim S.

Previous threads where you've been told that what you're doing is NOT THE RIGHT WAY TO RETURN AN ARRAY!!!!
http://cboard.cprogramming.com/cplus...parameter.html
http://cboard.cprogramming.com/cplus...-my-array.html
http://cboard.cprogramming.com/cplus...itialized.html
http://cboard.cprogramming.com/cplus...ore-float.html

Your indentation needs work (still!).

Here, consider the following.

Code:

---

#include <iostream>
#include <iomanip>
#include <cstdlib>
using namespace std;

void initArray(float largeArray[6][6])
{
  for (int x = 0; x < 6; x++) {
    for (int y = 0; y < 6; y++) {
      largeArray[x][y] = 0;
    }
  }
}

void printOutArray(float largeArray[6][6])
{
  for (int x = 0; x < 6; x++) {
    for (int y = 0; y < 6; y++) {
      cout << largeArray[x][y] << '\t';
    }
    cout << endl;
  }
//!! DONT DO THIS  return largeArray[6][6];
}

void tata(int degree_denominator, float largeArray[6][6])
{
  float array_of_coefficients[6];
  int c = 0;
  int l = 0;
  int x;
  for (x = degree_denominator; x >= 0; x--) {
    if (l == 2) {
      l = 0;
      c++;
    }
    cout << "what is the coefficient linked with degree" << x << "?" << endl;
    cin >> array_of_coefficients[x];
    largeArray[l][c] = array_of_coefficients[x];
    l++;
  }
//!! DONT DO THIS  return largeArray[6][6];
}

void toto(float largeArray[6][6], float finalArray[9][9] )
{
//!! is now a parameter  float finalArray[9][9] = { 0 };
  int u = 0;
  int v = 0;
  int line = 0;
  int i = 0;
  int r = line - 2;
  int s = line - 1;
  int f = i + 1;

  for (u = 0; u <= 1; u++) {
    for (v = 0; v <= 9; v++) {
      finalArray[u][v] = largeArray[u][v];
    }
  }

  for (line = 2; line < 9; line++) { //!! <, not <=
    for (i = 0; i < 9; i++) {        //!! <, not <=
      finalArray[line][i] =
          ((finalArray[r][f]) - ((finalArray[s][f]) * ((finalArray[r][i]) / (finalArray[s][i]))));
    }
  }
//!! DONT DO THIS  return finalArray[9][9];
}


void printOutArray2(float finalArray[9][9])
{
  for (int x = 0; x <= 9; x++) {
    for (int y = 0; y <= 9; y++) {
      cout << finalArray[x][y] << '\t';
    }
    cout << endl;
  }
//!! DONT DO THIS  return finalArray[9][9];
}

int main()
{
  float finalArray[9][9];
  float largeArray[6][6];
  initArray(largeArray);
  printOutArray(largeArray);
  int degree_denominator;
  cout << "what is the degree of the denominator?" << endl;
  cin >> degree_denominator;
  tata(degree_denominator, largeArray);
  printOutArray(largeArray);
  toto(largeArray,finalArray);  //!! extra parameter for the result
  cout << "final array:" << endl;
  printOutArray2(finalArray);
  system("PAUSE");
}

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