Examples of the simple IF statement in C language

#define LOW_LIMIT 0

if ( num < LOW_LIMIT )

{

printf(“Error: %d is smaller than %d\n”,

num, LOW_LIMIT);

printf(“Resetting number to %d.\n”,

LOW_LIMIT);

num = LOW_LIMIT;

}

#define MAXDAYS 10

if ( days > MAXDAYS )

{

printf(“Warning: %d days > %d\n”,

days, MAXDAYS);

}

#define T_LETTER ‘T’

if ( letter != T_LETTER )

{

printf(“You typed %c instead of %c\n”,

letter, T_LETTER);

}