Write a program to evaluate the adding of diagonal element of two square matrices
Example:
Input: matrixA[3][3]={{1,3,4},{3,4,5},{6,3,2}}, matrixB[3][3]={{3,2,1},{5,4,7},{7,8,9}} Output: Sum of diagonal elements of two matrixes is 23
Approach
C
#include <stdio.h>int main(){int matrixA[3][3] = {{1, 3, 4}, {3, 4, 5}, {6, 3, 2}};int matrixB[3][3] = {{3, 2, 1}, {5, 4, 7}, {7, 8, 9}};int sum = 0;for (int i = 0; i < 3; i++){for (int j = 0; j < 3; j++){if (i == j){sum += matrixA[i][j];sum += matrixB[i][j];}}}printf("Sum of diagonal elements of two matrixes is %d", sum);return 0;}
Java
public class DiagonalMatrixSum {public static void main(String[] args) {int matrixA[][] = { { 1, 3, 4 }, { 3, 4, 5 }, { 6, 3, 2 } };int matrixB[][] = { { 3, 2, 1 }, { 5, 4, 7 }, { 7, 8, 9 } };int sum = 0;for (int i = 0; i < 3; i++) {for (int j = 0; j < 3; j++) {if (i == j) {sum += matrixA[i][j];sum += matrixB[i][j];}}}System.out.printf("Sum of diagonal elements of two matrixes is %d", sum);}}
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