C++ break, continue and goto

break stops a loop at once. continue skips to the next round.

#include <iostream>

int main() {
    for (int i = 1; i <= 10; i++) {
        if (i == 5) break;
        std::cout << i << ' ';
    }
    std::cout << "\nLoop ended\n";

    for (int i = 1; i <= 8; i++) {
        if (i % 2 == 0) continue;           // skip the even numbers
        std::cout << i << ' ';
    }
    std::cout << '\n';
}

Search with break

#include <iostream>
#include <vector>

int main() {
    std::vector<int> numbers = {4, 9, 15, 22, 31};
    int found = -1;
    for (std::size_t i = 0; i < numbers.size(); i++) {
        if (numbers[i] == 15) {
            found = static_cast<int>(i);
            break;
        }
    }
    std::cout << "Found at index " << found << '\n';
}

Leave nested loops

break leaves only the inner loop. To leave all, use a flag, or put the loops in a function and return:

#include <iostream>

bool find_pair(int target) {
    for (int i = 1; i <= 5; i++) {
        for (int j = 1; j <= 5; j++) {
            if (i * j == target) {
                std::cout << "Found " << i << " x " << j << '\n';
                return true;                        // leaves both loops
            }
        }
    }
    return false;
}

int main() {
    std::cout << std::boolalpha << find_pair(12) << '\n';
}

goto

C++ has goto, but it makes code hard to follow. Almost always a loop, a function or break is a better choice.

• Previous Page
• Next Page

---

Exercises & Assignments
No Content Found.

Interview Questions & Answers
No Content Found.