Sum of lower triangular program | C language

Q : Write a ‘C’ Program to find Sum of lower triangular elements in a matrix.

Answer : 

Lower triangular

Lower triangular matrix is a special square matrix whole all elements above the main diagonal is zero.

Program : 

#include<stdio.h>

#include<conio.h>

#define MAXR 3

#define MAXC 3

/*============================

     Girfa Student Help

     sum of lower triangular matrix

==============================*/

void main()

{

     int A[MAXR][MAXC];

     int row, col, sum = 0;

     printf("Enter elements in matrix of size %dx%d: \n", MAX_ROWS, MAX_COLS);

     for (row = 0; row<MAXR; row++)

     {

           for (col = 0; col<MAXC; col++)

           {

                scanf("%d", &A[row][col]);

           }

     }

     /* Find sum of lower triangular matrix */

     for (row = 0; row<MAXR; row++)

     {

           for (col = 0; col<MAXC; col++)

           {

                if (col<row)

                {

                     sum += A[row][col];

                }

           }

     }

     printf("Sum of lower triangular matrix = %d", sum);

    

}

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