C Tutor... C Tutorial....: matrix multiplication in C Language | C Program to show matrix multiplication

matrix multiplication in C Language | C Program to show matrix multiplication | matrix multiplication assignment in C | Multiplication of matrix in C programming

#include
main()
{
    int j,i,k,m1,n1,m2,n2;
    int A[20][25],B[20][25],mul[20][25];         //declaration of 2 dimensional array
    printf("This is a program to get multiplication of two matrices A nad B\n\n");
    printf("Enter the rows in mat A..\n");
    scanf("%d",&m1);
    printf("Enter the columns in mat A..\n");
    scanf("%d",&n1);
    printf("Now keep on entering matrix elements.\n\n");
    for (i=0;i<m1;i++)
    {
        for (j=0;j<n1;j++)
        {
            printf("A%d%d=",i+1,j+1);
            scanf("%d",&k);
            A[i][j]=k;
        }
    }
   
    printf("\nEnter the rows in mat B..\n");
    scanf("%d",&m2);
    if(n1!=m2)
    {
        printf("\n\nDimension error.\nCan not multiply\nexiting...\n");
        exit(0);
    }
    printf("Enter the columns in mat B..\n");
    scanf("%d",&n2);
    printf("Now keep on entering matrix elements.\n\n");
    for (i=0;i<m2;i++)
    {
        for (j=0;j<n2;j++)
        {
            printf("B%d%d=",i+1,j+1);
            scanf("%d",&k);
            B[i][j]=k;
        }
    }
   
    printf("\n\nMatrix A is\n\n");
    for (i=0;i<m1;i++)
    {
        for (j=0;j<n1;j++)
        {
            printf ("%d ",A[i][j]);
        }
    putchar('\n');
    }
   
    printf("\n\nMatrix B is\n\n");
    for (i=0;i<m2;i++)
    {
        for (j=0;j<n2;j++)
        {
            printf ("%d ",B[i][j]);
        }
    putchar('\n');
    }
   
   
   
    for (i=0;i<m1;i++)            //initialisation of mat mul
    {
        for (j=0;j<n2;j++)
        {
             mul[i][j]=0;
        }
    }
   
   
    for (i=0;i<m1;i++)            //multiplication part
    {
        for (j=0;j<n2;j++)
        {
            for (k=0;k<n1;k++)
            {
                mul[i][j]+=A[i][k]*B[k][j];
            }
        }
    }
   
   
    printf("\n\nThe multiplied matrix is\n\n");
    for (i=0;i<m1;i++)
    {
        for (j=0;j<n2;j++)
        {
            printf ("%d ",mul[i][j]);
        }
    putchar('\n');
    }
    getchar();
}