Hi !

I tried to compile this program on red hat 9.0 but I keep getting segementation fault when I run the output. The program multiplies two matricies and is very simple one :

Code:

#include<stdio.h>
#include<stdlib.h>
int main()
{
int **A, **B, **C, row1, row2, col1, col2, sum, i, j, k;
printf("Enter the rows and columns of matrices:\n");
printf("Matrix one row and columns\n");
scanf("%d %d", &row1, &col1);
printf("Matrix two row and columns\n");
scanf("%d %d", &row2, &col2);
if(col1 != row2)
{
printf("Matrices cannot be multiplied\n");
exit(1);
}
A = malloc(row1*sizeof(int*));
B = malloc(row2*sizeof(int*));
C = malloc(row1*sizeof(int*));
for(i=0; i<row1; i++)
A[i] = malloc(col1*sizeof(int));
for(i=0; i<row2; i++)
B[i] = malloc(col2*sizeof(int));
for(i=0; i<row1; i++)
C[i] = malloc(col2*sizeof(int));
printf("Enter elements for first matrix row by row\n");
for(i=0; i<row1; i++)
for(j=0; j<col1; j++)
scanf("%d", &A[i][j]);
printf("Enter elements for second matrix row by row\n");
for(i=0; i<row2; i++)
for(j=0; j<col2; j++)
/*---------MULTIPLICATION------------------------- */
for(i=0; i<row1; i++)
{
for(j=0; j<col2; j++)
{
sum = 0;
for(k=0; k<col1; k++)
sum += A[i*k][j]*B[i][j*k];
C[i][j] = sum;
}
}
for(i=0; i<row1; i++)
{
for(j=0; j<col2; j++)
printf("%d ", C[i][j]);
printf("\n");
}
return 0;
}