Copyright © tutorialspoint.com

C - toupper function

previous

Synopsis:

#include <stdio.h>

int toupper(int c); 

Description:

The function returns the corresponding uppercase letter if one exists and if islower(c); otherwise, it returns c.

Return Value

The function returns the corresponding uppercase letter if one exists and if islower(c); otherwise, it returns c.

Example

#include <stdio.h>

int main() {

  printf( "Upper case of A is %c\n", toupper('A'));
  printf( "Upper case of 9 is %c\n", toupper('9'));
  printf( UpperLower case of g is %c\n", toupper('g'));
  return 0;
}

It will proiduce following result:

Lower case of A is A
Lower case of 9 is 9
Lower case of g is G

previous

Copyright © tutorialspoint.com