Write a C Program to matrix multiplication.

#include<stdio.h> 
#include<conio.h> 
void main()
{
    int a[100][100],b[100][100],c[100][100],i,j,k,r1,c1,r2,c2,sum=0;

    printf("Enter number of rows and columns of first matrix : \n");
    scanf("%d%d",&r1,&c1);

    printf("Enter number of rows and columns of second matrix : \n");
    scanf("%d%d",&r2,&c2);

    if(r2==c1)
    {
        printf("\n Enter First Matrix:");

        for(i=0; i<r1; i++)
        {
            for(j=0; j<c1; j++)
                scanf("%d",&a[i][j]);
        }

        printf("\n Enter Second Matrix: ");
        for(i=0; i<r2; i++)
        {
            for(j=0; j<c2; j++)
                scanf("%d",&b[i][j]);
        }

        printf("The First Matrix Is : \n");
        //print the first matrix
        for(i=0; i<r1; i++)
        {
            for(j=0; j<c1; j++)
                printf(" %d ",a[i][j]);

            printf("\n");
        }

        printf("The Second Matrix Is :\n");
        // print the second matrix
        for(i=0; i<r2; i++)
        {
            for(j=0; j<c2; j++)
                printf(" %d ",b[i][j]);

            printf("\n");
        }


        printf("Multiplication of the Matrices : \n");
        for(i=0; i<r1; i++)
        {
            for(j=0; j<c2; j++)
            {
                c[i][j]=0;
                for(k=0; k<r1; k++)
                    c[i][j]+=a[i][k]*b[k][j];

                 printf("\n");
            }

        }


        printf("The Resulted Matrix Is :\n");
        // print the second matrix
        for(i=0; i<r1; i++)
        {
            for(j=0; j<c2; j++)
                printf(" %d ",c[i][j]);

            printf("\n");
        }


    }
    else
    {
        printf("Matrix Multiplication is Not Possible");
    }
}