Answer SL45

Works Correctly

Different sums for 1 to 10 and 1 to 5

PS C:\Source>gcc sumVersion6.c 
PS C:\Source>a
sum of 1..10: 55
sum of 1..5: 15 
PS C:\Source>

Comments:

The identifier sum in the function has block scope and corresponds to a local variable for that function. The same identifier used in main() has block scope and corresponds to a different variable.

The variables are local (automatic) and should be initialized.

 
/* --- sumVersion5.c --- */
#include <stdio.h>
 
int sumInts( int limit )
{
  int j;
  int sum = 0;
  
  for ( j=1; j<=limit; j++ )
    sum += j;
    
  return sum;
}
 
void main()
{   
  int sum = sumInts( 10 );
  printf( "sum of 1..10: %d\n", sum );    

  sum = sumInts( 5 );
  printf( "sum of 1..5: %d\n", sum );    
   
}