C program to multiply two matrices using function

This C program is to multiply two matrices using function.For example, for a 2 x 2 matrix, the multiplication of two matrices matrix1 {1,2,3,4} and matrix2 {5,6,7,8} will be equal to mat{19,22,43,50}.

1     2                      5       6                       19        22

   X                                   =

3    4                       7       8                       43      50

Dry run of the program has been given here(click on the link) only additional part is the use of function.

If you yet need the dry run of the program or any other query, then kindly leave a comment in the comment box or mail me, I would be more than happy to help you.

Program

#include<stdio.h>
void multiply(int mat1[12][12],int mat2[12][12],int ,int ,int );

void main()
{
    int mat1[12][12],mat2[12][12];
    int i,j,k,m,n,p;
    printf("Enter the number of rows and columns for 1st matrix\n");
    scanf("%d%d",&m,&n);
    printf("Enter the elements of the 1st matrix\n");
    for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
        {
            scanf("%d",&mat1[i][j]);
        }
    }
    //no of col of 1st mat = no of rows of 2nd mat
    printf("Enter the number of columns for 2nd matrix\n"); 
    scanf("%d",&p);
    printf("Enter the elements of the 2nd matrix\n");
    for(i=0;i<n;i++)
    {
        for(j=0;j<p;j++)
        {
            scanf("%d",&mat2[i][j]);
        }
    }
    
    printf("The 1st matrix\n");
    for(i=0;i<m;i++)
    {
        for(j=0;j<n;j++)
        {
            printf("%d\t",mat1[i][j]);
        }
        printf("\n");
    }
    printf("The 2nd matrix\n");
    for(i=0;i<n;i++)
    {
        for(j=0;j<p;j++)
        {
            printf("%d\t",mat2[i][j]);
        }
        printf("\n");
    }
    multiply(mat1,mat2,m,n,p);
}

void multiply(int mat1[12][12],int mat2[12][12],int m,int n,int p)
{
    int mul[12][12],i,j,k;
    for(i=0;i<m;i++)
    {
        for(j=0;j<p;j++)
        {
            mul[i][j]=0;
            for(k=0;k<n;k++)
            {
                mul[i][j]=mul[i][j]+mat1[i][k]*mat2[k][j];
            }
        }
    }

    printf("The resultant matrix formed on multiplying the two matrices\n");
    for(i=0;i<m;i++)
    {
        for(j=0;j<p;j++)
        {
            printf("%d\t",mul[i][j]);
        }
        printf("\n");
    }
}

Output