C Program to Check Whether Character is Uppercase or Not without using Library function

#include<stdio.h>
void main()
{
char ch;
int i;
clrscr();
printf("\nEnter The Character : ");
scanf("%c",&ch);

if(ch>='A' &&ch<='Z')
  printf("\nCharacter is Uppercase Letters");
else
  printf("\nCharacter is Not Uppercase Letters");

getch();
}

---

Way 2 :

#include<stdio.h>
void main()
{
char ch;
int i;
clrscr();
printf("\nEnter The Character : ");
scanf("%c",&ch);

if(ch>=65 && ch<=90)
  printf("\nCharacter is Uppercase Letters");
else
  printf("\nCharacter is Not Uppercase Letters");

getch();
}

---

Output :

Enter The Character : A
Character is Uppercase Letters