Switch Case

Programming

This program demonstrates the switch statement, which provides an efficient way to select one of many code blocks to execute based on a variable's value.

Implementation

#include <iostream>

int main() {
    int choice;
    std::cout << "Enter a number (1-3): ";
    std::cin >> choice;

    switch (choice) {
        case 1:
            std::cout << "You chose 1" << std::endl;
            break;
        case 2:
            std::cout << "You chose 2" << std::endl;
            break;
        case 3:
            std::cout << "You chose 3" << std::endl;
            break;
        default:
            std::cout << "Invalid choice" << std::endl;
    }
    return 0;
}

Key Concepts

switch: Evaluates an expression and matches it to a case label
case: Defines a specific value to match
break: Exits the switch statement (prevents fall-through to next case)
default: Handles values that don't match any case (optional)

Example Interaction

Enter a number (1-3): 2
You chose 2