C++ Break and Continue — Loop Control Guide

#include <iostream>
using namespace std;

int main() {
    // Find first number divisible by 7 between 1 and 50
    for (int i = 1; i <= 50; i++) {
        if (i % 7 == 0) {
            cout << "First multiple of 7: " << i << endl;  // 7
            break;  // exit loop immediately
        }
    }

    // Linear search - stop when found
    int arr[] = {5, 3, 8, 1, 9, 2};
    int target = 8;
    bool found = false;
    for (int i = 0; i < 6; i++) {
        if (arr[i] == target) {
            cout << target << " found at index " << i << endl;
            found = true;
            break;
        }
    }
    if (!found) cout << target << " not found" << endl;

    // break only exits the INNERMOST loop
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            if (j == 1) break;  // exits inner loop only
            cout << "(" << i << "," << j << ") ";
        }
    }
    cout << endl;  // (0,0) (1,0) (2,0)

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    // Print only odd numbers 1"10
    for (int i = 1; i <= 10; i++) {
        if (i % 2 == 0) continue;  // skip even numbers
        cout << i << " ";
    }
    cout << endl;  // 1 3 5 7 9

    // Skip negative numbers when summing
    int nums[] = {5, -3, 8, -1, 4, -7, 2};
    int sum = 0;
    for (int n : nums) {
        if (n < 0) continue;  // skip negatives
        sum += n;
    }
    cout << "Sum of positives: " << sum << endl;  // 19

    // Print numbers 1"20, skip multiples of 3 and 5
    for (int i = 1; i <= 20; i++) {
        if (i % 3 == 0 || i % 5 == 0) continue;
        cout << i << " ";
    }
    cout << endl;  // 1 2 4 7 8 11 13 14 16 17 19

    return 0;
}