Write a program to multiply two m × n matrices

#include <stdio.h>
#include <conio.h>
int main()
{
int i, j, k;
int rows1, cols1, rows2, cols2, res_rows, res_cols;
int mat1[5][5], mat2[5][5], res[5][5];
clrscr();
printf("\n Enter the number of rows in the first matrix : ");
scanf("%d",&rows1);
printf("\n Enter the number of columns in the first matrix : ");
scanf("%d",&cols1);
printf("\n Enter the number of rows in the second matrix : ");
scanf("%d",&rows2);
printf("\n Enter the number of columns in the second matrix : ");
scanf("%d",&cols2);
if(cols1 != rows2)
{
printf("\n The number of columns in the first matrix must be equal 
to the number of rows in the second matrix");
 getch();
 exit();
}
res_rows = rows1;
res_cols = cols2;
printf("\n Enter the elements of the first matrix ");
for(i=0;i<rows1;i++)
{
for(j=0;j<cols1;j++)
{
scanf("%d",&mat1[i][j]);
}
}
printf("\n Enter the elements of the second matrix ");
for(i=0;i<rows2;i++)
{
for(j=0;j<cols2;j++)
{
scanf("%d",&mat2[i][j]);
}
}
for(i=0;i<res_rows;i++)
{
for(j=0;j<res_cols;j++)

{
res[i][j]=0;
for(k=0; k<res_cols;k++)
res[i][j] += mat1[i][k] * mat2[k][j];
}
}
printf("\n The elements of the product matrix are ");
for(i=0;i<res_rows;i++)
{
 printf("\n");
for(j=0;j<res_cols;j++)
printf("\t %d",res[i][j]);
}
return 0;
}