Thread: Code before a line that Crashes doesn't execute

I use cout<<"something"; to find a location as to where the program is crashing. However, they don't print even though the debugger says the program crashes at a line after the cout<<"something";

Code:

#include <iostream.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>

void crossProduct (int **matrixA, int am, int an, int **matrixB, int bm, int bn, int **matrixC) {
	int x= 0;
	cout<<"something2";
	int temp;
	
	for (int i = 0; i<am; i++)
		for (int j = 0;j<an; i++) {
			for (int k =0;k<bm;k++)
				for (int l=0;l<bn;l++) {
					cout<<"x:"<<x<<" ";
					x++;
					temp = matrixB[k][l] * matrixA[i][j] + temp;
				}
			matrixC[i][j] = temp;
			temp = 0;
		}

}

int main() {
	int **p1, **p2, **p3;
	int i;
	int sizeX =3;
	int sizeY =3;
	p1 = new int*[sizeX];
	p2 = new int*[sizeX];
	p3 = new int*[sizeX];
	for (i = 0; i < sizeX; ++i) {
		p1[i] = new int[sizeY];
		p2[i] = new int[sizeY];
		p3[i] = new int[sizeY];
	}
//////////////////////////////////////////////////////
	initMatrix(p1,sizeX, sizeY);
	initMatrix(p2,sizeX,sizeY);
	printMatrix(p1,sizeX,sizeY);
	printMatrix(p2,sizeX,sizeY);
	cout<<"something1";
	crossProduct(p1,sizeX,sizeY,p2,sizeX,sizeY,p3);
	printMatrix(p3,sizeX,sizeY);

...something down here...

Where initMatrix fills it with values, and printMatrix does exactly that.
The debugger is telling me that the program crashes at:

Code:

					temp = matrixB[k][l] * matrixA[i][j] + temp;

However, something1 and something2 don't print. If I comment out

Code:

//	crossProduct(p1,sizeX,sizeY,p2,sizeX,sizeY,p3);

like so, the program runs and doesn't crash.

This is very strange...

found it

in the 4 for loops the j loop was incrementing i...

but why would the program not print anyways?

because the stream is buffered and not necessarily flushed on a crash!

add either endl or flush to the end of your couts.

cout<<"debug message"<<endl;
cout<<"debug message"<<flush;

1st will flush and add a /n. second will just flush.