#include <stdio.h>
#define ONE 1
#define TWO 2
//---------------------------------------------------------------------------------------
//                                              Exercise 2_7
//                                              ------------
//
// General : The program change letters by one depends on situation.
//
// Input   : 2 letters.
//
// Process : The program checks if the first letter is before the second in
//           the ABC and acts accordingly.
//
// Output  : '1' if is it True, '0' is false.
//
//---------------------------------------------------------------------------------------
// Programmer : Cohen Idan
// Student No : None
// Date       : 19.09.2019
//---------------------------------------------------------------------------------------
void main(void)
{
    char a,
         b,
         final_a,
         final_b,
         opr = '+';
    
    printf("Enter 2 chars: ");
    scanf("%c%c", &a, &b);

    final_a = a + ONE;
    final_b = b - ONE;

    if (a > b)
    {
        final_a -= TWO;
        final_b += TWO;
        opr = '-';
    }

    printf("%c %c %c\n", final_a, opr, final_b);
}