matrix.c

#include<stdio.h>
main()
{
    int m,n,m1,n1,i,j,k,a[10][10],b[10][10],r[10][10];
    printf("\nEnter the first matrix row & coloumn size:");
    scanf("%d%d",&m,&n);
    printf("Enter the matrix element:");
    i=0;
    r1:if(i<m)
        {
            j=0;
            c1:if(j<n)
            {
               scanf("%d",&a[i][j]);
               j++;
               goto c1;
            }
            i++;
            goto r1;
        }
    printf("\nEnter the second matrix row & coloumn size:");
    scanf("%d%d",&m1,&n1);
    if(n==m1)
    {
        printf("Enter the matrix element:");
        i=0;
        r2:if(i<m1)
            {
                j=0;
                c2:if(j<n1)
                {
                   scanf("%d",&b[i][j]);
                   j++;
                   goto c2;
                }
                i++;
                goto r2;
            }
    }
    else
    {
         printf("\nError! column of first matrix not equal to row of second matrix.\n\n");
         exit(0);
    }
    i=0;
    r3:if(i<m)
    {
        j=0;
        c3:if(j<n1)
        {
            r[i][j]=0;
            k=0;
            k3:if(k<m1)
            {
                r[i][j]=r[i][j]+a[i][k]*b[k][j];
                k++;
                goto k3;
            }
            j++;
            goto c3;
        }
        i++;
        goto r3;
    }
    printf("\nMultiplied matrix element:\n");
    i=0;
    r4:if(i<m)
        {
            j=0;
            c4:if(j<n1)
            {
               printf("%d\t",r[i][j]);
               j++;
               goto c4;
            }
            i++;
            printf("\n");
            goto r4;
        }
}