C program to check whether the given input is alphabet or not

Write a C program to check whether the given input is alphabet or not.

  #include <stdio.h>

  int main() {
        int ch;

        /* get the input character from the user */
        printf("Enter your input character:");
        ch = getchar();

        /*
         * if the input character is not from a to z or
         * A to Z then the input character is alphabet.
         * Otherwise not an alphabet.
         */

        if ((ch >= 'a' && ch <= 'z') ||
                (ch >= 'A' && ch <= 'Z')) {
                printf("Given input %c is a character\n", ch);
        } else {
                printf("Given input %c is not a character\n", ch);
        }

        return 0;
  }

  Output:

  jp@jp-VirtualBox:~/$ ./a.out
  Enter your input character:Z
  Given input Z is a character