isupper() function in C programming checks whether the given character is upper case or not. isupper() function is defined in ctype.h header file.
int isupper ( int x );
Input: A Output: Entered character is uppercase character Input: a Output: Entered character is not uppercase character Input: 1 Output: Entered character is not uppercase character
Entered character is uppercase character
Application : isupper() function in C programming language is used to find out total number of uppercase present in a given senence.
Input: GEEKSFORGEEKS Output: Number of upper case present in the sentence is : 13 Input: GeeksFORGeeks Output: Number of upper case present in the sentence is : 5 Input: geeksforgeeks Output: Number of upper case present in the sentence is : 0
Number of upper case present in the sentence is : 3
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