The break statement immediately terminates the nearest enclosing loop or switch statement. Program execution continues with the first statement following that loop or switch.

In a switch statement, break is commonly used at the end of each case to prevent execution from continuing into subsequent cases.

Source Code #

#include <iostream>

int main()
{
    int day = 2;

    switch (day)
    {
        case 1:
            std::cout << "Monday\n";
            break;

        case 2:
            std::cout << "Tuesday\n";
            break;

        case 3:
            std::cout << "Wednesday\n";
            break;

        default:
            std::cout << "Invalid day\n";
            break;
    }

    std::cout << "Switch completed.\n";

    return 0;
}

Output #

Tuesday
Switch completed.

Explanation #

• The break statement immediately terminates the nearest enclosing switch or loop.
• When day is 2, case 2 is selected and "Tuesday" is printed.
• break; then terminates the switch statement.
• Execution continues with the statement following the switch block.
• Without break, execution could continue into the statements of subsequent cases, resulting in fallthrough.
• A break statement affects only the nearest enclosing loop or switch statement.
• break does not terminate the entire program; execution continues normally after the enclosing construct.
• return 0; terminates the program successfully.