untittled

#include<stdio.h>
int main()
{
    int first[10][10],second[10][10],result[10][10],c1,c2,r1,r2,i,j,k,sum=0;


    printf("Enter rows and cols for first matrix : ");
    scanf("%d%d",&r1,&c1);
    printf("Enter rows and cols for second matrix : ");
    scanf("%d%d",&r2,&c2);

    while(c1!=r2)
    {
        printf("Error!! col of first matrix not equal to row of second");
        printf("Enter rows and cols for first matrix : ");
        scanf("%d%d",&r1,&c1);
        printf("Enter rows and cols for second matrix : ");
        scanf("%d%d",&r2,&c2);
    }

    printf("Enter elements for first matrix: \n");
    for(i=0; i<r1; i++)
    {
        for(j=0; j<c1; j++)
        {
            printf("first[%d][%d] = ",i,j);
            scanf("%d",&first[i][j]);
        }

    }


    printf("\nEnter elements for second matrix: \n");
    for(i=0; i<r2; i++)
    {
        for(j=0; j<c2; j++)
        {
            printf("second[%d][%d] = ",i,j);
            scanf("%d",&second[i][j]);
        }

    }
    //multipying matrix

    for(i=0; i<r1; i++)
    {

        for(j=0; j<c2; j++)
        {
            for(k=0; k<c1; k++)
            {
                sum=sum+first[i][k]*second[k][j];
            }
            result[i][j]=sum;
            sum=0;
        }

    }
    printf("\n\nfirst matrix\n");
    for(i=0; i<r1; i++)
    {
        printf("\t");
        for(j=0; j<c1; j++)
        {

            printf("%d ",first[i][j]);

        }
        printf("\n");
    }


    printf("\n\nsecond matrix\n");
    for(i=0; i<r2; i++)
    {
        printf("\t");
        for(j=0; j<c2; j++)
        {

            printf("%d ",second[i][j]);

        }
        printf("\n");
    }


    printf("\n\nResult Matrix\n");
    for(i=0; i<r1; i++)
    {
        printf("\t");
        for(j=0; j<c2; j++)
         printf("%d ",result[i][j]);
            printf("\n");

    }



    return 0;
}