C program to find sum of diagonal elements of a matrix

C program to find sum of diagonal elements of a matrix

1. #include<stdio.h>
2. int main()
3. {
4.  int a[3][3], i, j, total=0;
5. //Loops for Reading the matrix
6.  for ( i = 0; i < 3; i++ ) //related to row
7.  { 
8.    for ( j = 0; j < 3; j++ ) //related to column
9.    { 
10.     printf("Element[%d][%d]:",i,j);
11.      scanf("%d", &a[i][j]) ;
12.    }   
13.  } 
14. //Loops to find total
15.  for ( i = 0; i < 3; i++ ) //related to row
16.  { 
17.    for ( j = 0; j < 3; j++ ) //related to column
18.    { 
19.     if(i==j)
20.       total = total + a[i][j];
21.    }   
22.  } 
23.  printf("Sum of Diagonal elements of Matrix A: %d", total);
24.  return 0;
25. } 
26.  

Output

Element[0][0]:2

Element[0][1]:3

Element[0][2]:3

Element[1][0]:4

Element[1][1]:5

Element[1][2]:6

Element[2][0]:7

Element[2][1]:8

Element[2][2]:9

Sum of Diagonal elements of Matrix A: 17

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