getchar() and putchar() function is a file handling function in C programming language which is used to write a character on standard output/screen. getchar() function is used to get/read a character from keyboard input.
The getchar() function reads a character from the terminal and returns it as an integer. This function reads only single character at a time.
The putchar() function displays the character passed to it on the screen and returns the same character. This function too displays only a single character at a time. In case you want to display more than one characters, use putchar() method in a loop.
Enter some character. Enter $ to exit… A Entered character is: A B Entered character is: B $ Entered character is: $
$./a.out Enter a value : this is test You entered: this is test