C Program to Reverse Three Characters: A Step-by-Step Guide

Reverse Three Characters in C: A Simple Program

This tutorial will guide you through creating a C program that takes three characters as input from the user and displays them in reverse order.

C Code:c#include <stdio.h>

int main() { // Prompt the user for three characters char ch1, ch2, ch3; printf('Enter the first character: '); scanf(' %c', &ch1); printf('Enter the second character: '); scanf(' %c', &ch2); printf('Enter the third character: '); scanf(' %c', &ch3);

// Display the characters in reverse order    printf('Characters in reverse order: %c %c %c

', ch3, ch2, ch1);

return 0;}

Explanation:

1. Include header: The #include <stdio.h> line includes the standard input/output library, which provides functions like printf (for printing output) and scanf (for reading input).

2. Declare variables: Three char type variables (ch1, ch2, ch3) are declared to store the three characters input by the user.

3. Prompt for input: The program uses printf to display prompts asking the user to enter each character.

4. Read input: scanf(' %c', &variable) reads a single character from the user and stores it in the corresponding variable. The space before %c is important to consume any leftover newline characters from previous inputs.

5. Reverse and display: The printf statement then displays the characters in reverse order (ch3, ch2, ch1).

How to Run the Code:

1. Save the code: Copy and paste the code into a text editor and save it with a .c extension (e.g., reverse_characters.c).

2. Compile the code: Open a terminal or command prompt and use a C compiler (like GCC) to compile your code. For example: bash gcc reverse_characters.c -o reverse_characters

3. Run the program: Execute the compiled file: bash ./reverse_characters

The program will prompt you to enter three characters. After you provide the input, it will display them in reverse order on your console.