Thread: Can Anyone...

Can anyone please debug this simple program of mine. It takes two 3*3 matrices and multiplies them. Everything is right, except that when the 2nd matrix gets printed, the first element is printed as a muliple of 4. I can't find anything wrong.

Code:

#include<stdio.h>
#include<conio.h>

void main()
{
	int a[3][3],b[3][3],c[3][3]={0,0,0,0,0,0,0,0,0};
	int j,i,x,y; clrscr();
	
         x=y=0;

	for(i=0;i<=2;i++)                                       /* Initialize 1st Matrix */
		for(j=0;j<=2;j++)
			scanf("%d",&a[i][j]);
	
        for(i=0;i<=2;i++)                                        /* Initialize 2nd Matrix */
		for(j=0;j<=2;j++)
			scanf("%d",&b[i][j]);

	for(;x<=2;y++)                                         
	{       if(y==3)
		{x++; y=0;}                         /* Multiply the two matrices and store them in c */

		for(j=0;j<=2;j++)
		{
			c[x][y]+=(a[x][j]*b[j][y]);
		}
	}

	printf("\n1st Matrix\n");               /* Print 1st Matrix */
	for(i=0;i<=2;i++)
	{	for(j=0;j<=2;j++)
			printf("%d ",a[i][j]);
		printf("\n");
	}
	printf("\n2nd Matrix\n");                /* Print 2nd Matrix */
	for(i=0;i<=2;i++)
	{	for(j=0;j<=2;j++)
			printf("%d ",b[i][j]);
		printf("\n");
	}
	printf("\nFinal Matrix\n");            /* Print Multiplied Matrix */
	for(i=0;i<=2;i++)
	{	for(j=0;j<=2;j++)
			printf("%d ",c[i][j]);
	printf("\n");
	}
}