Question

How to break the outer loop in C++

Answer 1

#include <iostream>

int main() {
    bool breakOuter = false;
    for (int i = 0; i < 6; i++) {
        std::cout << "Outer loop: i)" << i << "\n  ";
        for (int j = 0; j < 4; ++j) {
            if (i == 3) {
                breakOuter = true;
                break;
            }
            std::cout << "j)" << j << " ";
        }
        std::cout << "\n";
        if (breakOuter) {
            break;
        }
        
    }
}


/*
run:
   
Outer loop: i)0
  j)0 j)1 j)2 j)3 
Outer loop: i)1
  j)0 j)1 j)2 j)3 
Outer loop: i)2
  j)0 j)1 j)2 j)3 
Outer loop: i)3
   
*/

 

70+ SQL courses for beginners and professionals

Answer 2

#include <iostream>

int main() {
    for (int i = 0; i < 6; i++) {
        std::cout << "Outer loop: i)" << i << "\n  ";
        for (int j = 0; j < 4; j++) {
            if (i == 2) {
                goto endLoops;
            }
            std::cout << "j)" << j << " ";
        }
        std::cout << "\n";
    }
endLoops:
    return 0;
}

   
   
/*
run:
   
Outer loop: i)0
  j)0 j)1 j)2 j)3 
Outer loop: i)1
  j)0 j)1 j)2 j)3 
Outer loop: i)2
   
*/

 

70+ SQL courses for beginners and professionals

Answer 3

#include <iostream>

void nestedLoops() {
    for (int i = 0; i < 6; i++) {
        std::cout << "Outer loop: i)" << i << "\n  ";
        for (int j = 0; j < 4; j++) {
            if (i == 3) {
                return;
            }
            std::cout << "j)" << j << " ";
        }
        std::cout << "\n";
    }
}

int main() {
    nestedLoops();
}

   
   
/*
run:
   
Outer loop: i)0
  j)0 j)1 j)2 j)3 
Outer loop: i)1
  j)0 j)1 j)2 j)3 
Outer loop: i)2
  j)0 j)1 j)2 j)3 
Outer loop: i)3
   
*/

 

70+ SQL courses for beginners and professionals