Slip 8 - B) Write a menu driven program to perform the following operation on m*n Matrix 1. Calculate sum of upper triangular matrix elements 2. Calculate sum of diagonal elements

Solution:

#include <stdio.h>

void main()

{

    int fig_code;

    float side, base, length, breadth, height, area, radius;

    printf("-------------------------\n");

    printf(" 1 --> sum of upper\n");

    printf(" 2 --> sum of dignola\n");

    printf("-------------------------\n");

    int i, j, a[10][10], sum, rows, columns;

   printf("\nEnter the number of Rows : ");

   scanf("%d", &rows);

   printf("\nEnter the number of Columns : ");

   scanf("%d", &columns);

   //Accept the Elements in Matrix

   for (i = 0; i < rows; i++)

      for (j = 0; j < columns; j++) {

         printf("\nEnter the Element a[%d][%d] : ", i, j);

         scanf("%d", &a[i][j]);

      }

    printf("Enter the Figure code\n");

    scanf("%d", &fig_code);

    switch(fig_code)

    {

 

    case 1:

        sum = 0;

        for (i = 0; i < rows; i++)

      for (j = 0; j < columns; j++) {

         // Condition for Upper Triangle

         if (i < j) {

            sum = sum + a[i][j];

         }

      }

printf("sum of upper=%d",sum);

        break;

    case 2:

sum = 0;

   for (i = 0; i < rows; i++)

      for (j = 0; j < columns; j++) {

         // Condition for Upper Triangle

         if (i == j) {

            sum = sum + a[i][j];

         }

      }

printf("sum of digonal=%d",sum);

        break;

 

    default:

        printf("Error in figure code\n");

        break;

    }

}