Testing letters using and : Operator Relation « Language Basics « C / ANSI-C

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C / ANSI-C » Language Basics » Operator Relation Screenshots  Testing letters using and /*Testing letters using and */ #include <stdio.h> void main() {    char letter =0;                         /* Stores an input character */        printf("Enter an upper case letter:");       scanf(" %c", &letter);                  /* Read the input character  */    if ((letter >= 'A') && (letter <= 'Z')) /* Verify uppercase letter  */    {      letter += 'a'-'A';                    /* Convert to lowercase     */      printf("Your enter is %c.\n", letter);    }    else      printf("An uppercase letter please.\n"); }                     Related examples in the same category 1. Logical operator 2. Relational and logical operations