#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    char letter;
    char code;
    int  number;
    int  value;
    int  start;
    
    letter = 'T';
    code = 'B';
    number = 3;
    
    printf("%c %c %c \n", 'C', 'A', letter);
    printf("%c %c %c \n", code, 'A', letter);
    
    number = (int)'D' - (int)'A';
    value = (int)code - (int)'A';

    printf("%d %d \n", number, value);

    if ( ((int)'Z' - (int)'A') == 25 )
    {
        start = (int)'A'; 
        number = code - start;
        
        printf("%d %d \n", number, (int)'E' - start);
        printf("%c %c \n", 'J', (char)(start + 3));

        value = (int)'7' - (int)'2';
        value = start + value;
        printf("%c \n", (char)value);
        
        start = (int)'C';

        printf("+++");       
        for  (number = start; number <= value; number++)
        {
            printf("%c", (char)number);
        }      
        printf("\n");
    }
    else
    {
        printf("Oops");
        exit(1);
    }
    return (0);
}