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C program that multiplies the matrix a by the matrix b and stores the result in the matrix c

###### Posted by Samath

Last Updated:
May 04, 2016

Consider the following variable declarations. Assume each variable stores the values in a matrix. Write code that multiplies the matrix a by the matrix b and stores the result in the matrix c .

float a[2][3],b[3][2],c[2][2];

**Solution:**

#include<stdio.h> int main(int argc, char *argv[]) { float a[2][3], b[3][2], c[2][2]; int i, j; float value,temp1=0,temp2=0; printf("Enter Matrix 1\n"); for (i = 0; i < 2; i++){ printf("Enter Elements of Row %d \n", i + 1); for (j = 0; j < 3; j++){ printf("Enter value of Column %d ", j + 1); scanf("%f", &value); a[i][j] = value; } } printf("Enter Matrix 2\n"); for (i = 0; i < 3; i++){ printf("Enter Elements of Row %d \n", i + 1); for (j = 0; j < 2; j++){ printf("Enter value of Column %d ", j + 1); scanf("%f", &value); b[i][j] = value; } } for (i = 0; i < 2; i++){ for (j = 0; j < 3; j++){ temp1 = temp1 + a[i][j] * b[j][i]; temp2 = temp2 + a[i][j] * b[j][1]; } c[i][0] = temp1; c[i][1] = temp2; temp1 = 0; temp2 = 0; } for (i = 0; i < 2; i++){ for (j = 0; j < 2; j++) printf("%.2f ", c[i][j]); printf("\n"); } return 0; }