C program to find multiplication of two matrices

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mahmoud2506

2022-05-04

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Program to multiply two matrices in C language

#include <stdio.h>
 
#define MAXROW      10
#define MAXCOL      10
 
 
/*User Define Function to Read Matrix*/
void readMatrix(int m[][MAXCOL],int row,int col)
{
    int i,j;
    for(i=0;i< row;i++)
    {
        for(j=0;j< col;j++)
        {
            printf("Enter element [%d,%d] : ",i+1,j+1);
            scanf("%d",&m[i][j]);
        }
    }
}
 
/*User Define Function to Read Matrix*/
void printMatrix(int m[][MAXCOL],int row,int col)
{
    int i,j;
    for(i=0;i< row;i++)
    {
        for(j=0;j< col;j++)
        {
            printf("%d\t",m[i][j]);
        }
        printf("\n");
    }
}
 
int main()
{
    int a[MAXROW][MAXCOL],b[MAXROW][MAXCOL],result[MAXROW][MAXCOL];
    int i,j,r1,c1,r2,c2;
    int sum,k;
 
     
    printf("Enter number of Rows of matrix a: ");
    scanf("%d",&r1);
    printf("Enter number of Cols of matrix a: ");
    scanf("%d",&c1);
 
    printf("\nEnter elements of matrix a: \n");
    readMatrix(a,r1,c1);
 
 
         
    printf("Enter number of Rows of matrix b: ");
    scanf("%d",&r2);
    printf("Enter number of Cols of matrix b: ");
    scanf("%d",&c2);
 
    printf("\nEnter elements of matrix b: \n");
    readMatrix(b,r2,c2);
 
 
    if(r1==c2)
    {
        /*Multiplication of two matrices*/
        for(i=0;i< r1;i++)
        {
            for(j=0;j< c1;j++)
            {
                sum=0;
                for(k=0;k< r1;k++)
                {
                    sum=sum + (a[i][k]*b[k][j]);
                }
                result[i][j]=sum;
            }
        }
     
        /*print matrix*/
        printf("\nMatrix after multiplying elements (result matrix):\n");
        printMatrix(result,r1,c1);      
         
     
    }
    else
    {
        printf("\nMultiplication can not be done.");
    }
 
 
    return 0;
}

Output

Enter number of Rows of matrix a: 3 
Enter number of Cols of matrix a: 3 

Enter elements of matrix a: 
Enter element [1,1] : 1 
Enter element [1,2] : 2 
Enter element [1,3] : 3 
Enter element [2,1] : 4 
Enter element [2,2] : 5 
Enter element [2,3] : 6 
Enter element [3,1] : 7 
Enter element [3,2] : 8 
Enter element [3,3] : 9 

Enter number of Rows of matrix b: 3 
Enter number of Cols of matrix b: 3 

Enter elements of matrix b: 
Enter element [1,1] : 1 
Enter element [1,2] : 1 
Enter element [1,3] : 1 
Enter element [2,1] : 2 
Enter element [2,2] : 2 
Enter element [2,3] : 2 
Enter element [3,1] : 3 
Enter element [3,2] : 3 
Enter element [3,3] : 3 

Matrix after multiplying elements (result matrix): 
14	14	14	 
32	32	32	 
50	50	50

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total answers (1)

C program to find multiplication of two matrices

C program to find multiplication of two matrices

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Program to multiply two matrices in C language

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