Question

How to break out of nested for loops in C++

Answer 1

#include <iostream>

int main() {
    bool stop = false;
 
    for (int i = 1; i <= 30 && !stop; i++) {
        for (int j = 0; j < 5; j++) {
            if (i == 4) {
                stop = true;
                break;
            }
            std::cout << j << " ";
        }
        std::cout << "\n";
    }
 
    std::cout << "After loops";
}
 
 
 
 
/*
run:
 
0 1 2 3 4 
0 1 2 3 4 
0 1 2 3 4 

After loops
 
*/

 

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Answer 2

#include <iostream>

int main() {
    bool stop = false;
 
    for (int i = 1; i <= 30 && !stop; i++) {
        for (int j = 0; j < 5; j++) {
            if (i == 4) {
                goto ENDLOOP;
            }
            std::cout << j << " ";
        }
        std::cout << "\n";
    }
    
 ENDLOOP:
    std::cout << "\nAfter loops";
}
 
 
 
 
/*
run:
 
0 1 2 3 4 
0 1 2 3 4 
0 1 2 3 4 

After loops
 
*/

 

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