In this source code example, we will see how to use the putchar() function in C programming with an example.

putchar() Function Overview

The putchar() function in C is used to write a single character to the standard output, typically the console or terminal screen.

Source Code Example

#include <stdio.h> int main() { char ch = 'A'; // Displaying a character using putchar putchar(ch); putchar('\n'); // Using putchar in a loop to print characters for (int i = 0; i < 5; i++) { putchar('B'); } putchar('\n'); printf("Enter any character to display: "); ch = getchar(); // Reading a character using getchar putchar(ch); // Displaying the character using putchar return 0; } 

Output

A BBBBB Enter any character to display: C C 

Explanation

1. We begin by displaying a character 'A' using putchar.

2. We then use a for-loop to display the character 'B' five times in a row.

3. We prompt the user to enter any character.

4. We read the user input using getchar().

5. The entered character is then displayed using putchar.