C programming for multiplication of two matrices

/*Multiplication of matrices*/

#include<stdio.h>

void

main()

{

            int i,j,m,n,p,k,a[20][20],b[20][20],c[20][20];

            printf("enter the order of matrix A:");

            scanf("%d%d",&m,&n);

                        printf("enter the order of matrix B:");

            scanf("%d%d",&n,&p);

            printf("enter the elements of matrix A:");

                        for(i=0;i<m;i++)

                        {

                                    for(j=0;j<n;j++)

                                                scanf("%d",&a[i][j]);

                                    printf("\n");

                        }

                        printf("the input matrix A is:\n");

                        for(i=0;i<m;i++)

                        {

                                    for(j=0;j<n;j++)

                                                printf("%d\t",a[i][j]);

                                    printf("\n");

                        }

                        printf("enter the elements of matrix B :");

                        for (i=0;i<n;i++)

                        {

                                    for(j=0;j<p;j++)

                                                scanf("%d",&b[i][j]);

                                    printf("\n");

                        }

                        printf("the input matrix B is:\n");

                        for(i=0;i<n;i++)

                        {

                                    for(j=0;j<p;j++)

                                                printf("%d\t",b[i][j]);

                                    printf("\n");

                        }

                        /*matrix multiplication*/

                        for(i=0;i<m;i++)

                        {

                                    for(j=0;j<p;j++)

                                    {

                                                c[i][j]=0;

                                                for(k=0;k<n;k++)

                                                {

                                                            c[i][j]=c[i][j]+a[i][k]*b[k][j];

                                                }

                                    }

                        }

                        printf("multiplication of the matrix is:\n");

                        for(i=0;i<m;i++)

                        {

                                    for(j=0;j<p;j++)

                                                printf("%d\t",c[i][j]);

                                    printf("\n");

                        }

}