C

getchar in c

#include <stdio.h>

int main () {
   char c;
 
   printf("Enter character: ");
   c = getchar();
 
   printf("Character entered: ");
   putchar(c);

   return(0);
}

getchar c

#include <stdio.h>
int getchar(void);

getchar declaration in c

int getchar(void)
/* returns either:
 * 1. In SUCCESS: The character read as an unsigned char casted to an int.
 * 2. In FAILURE: EOF on end of file or error. 
 */