text: #include<stdio.h>
   
  int main()
  {
   	int i, j, rows, columns, a[10][10], Sum = 0;
   	printf("\n Please Enter Number of rows and columns  :  ");
   	scanf("%d %d", &i, &j); 
   	printf("\n Please Enter the Matrix Elements \n");
   	for(rows = 0; rows < i; rows++)
    	{
     		for(columns = 0;columns < j;columns++)
      	{
        		scanf("%d", &a[rows][columns]);
      	}
    	}  	  
   	for(rows = 0; rows < i; rows++)
    	{
     		Sum = Sum + a[rows][rows];
    	}
   	printf("\n The Sum of Diagonal Elements of a Matrix =  %d", Sum );
   	return 0;
  }
  