Single Character Input – getchar ( ) Function:

The getchar ( ) is a part of I/O library functions available in C. It returns a single character from a standard input device. This function does not require any arguments, though a pair of empty brackets must follow the getchar ( ).

 Generally, it is written as

There are two other I/O library functions i.i. getch ( ) and getche ( ).

Program to take a input by getchar ( ) function.

#include<stdio.h>

#include<conio.h>

main()

{

            char ch;

            ch=getchar();

            printf(“character input by user is %c”,ch);

            getch();

}

Output:

A

Character input by user is a

---

Single Character Output putchar ( ) Function:

The putchar ( ) is also another I/ O library function available in C. It transmits a single character to a standard output device (monitor). The character being transmitted is normally represented as a character type variable. It is normally written as putchar ( ).

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