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C

isupper()

checks whether character is upper case

Syntax:

int isupper(int c);

Example:

#include 

int main()
{
   char ch;
   printf("Enter any character\n");
   scanf("%c", &ch);

   if ( isupper ( ch ) )
      printf ("\nEntered character is uppercase character");
   else
      printf("\nEntered character is not uppercase character");
}
Output:

Enter any character
A
Entered character is upper case character

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