C Program to Check Uppercase and Lowercase Character

program:

#include<stdio.h>
#include<string.h>
int main()
{
 char ch;
 printf("Enter any alphabet\n");
 scanf("%c",&ch);
 if(ch>=65&&ch<=90)
 {
  printf("Uppercase");
 }
 else
 {
  printf("Lowercase");
 }
}

output:

.