‘C’ program to check if character is uppercase or lowercase.

C File =>

/* Write a ‘C’ program to accept a character and check if it is uppercase 

or lowercase */

#include<stdio.h>

#include<ctype.h>

int main() 

{

        char ch;

        printf("\n Enter character : ");

        scanf("%c",&ch);

        if(islower(ch))

              printf("\n Lower case character..");

        else if(isupper(ch))

              printf("\n Upper case character..");

       else

              printf("\n Invalid input...");

      return 0;

}