Range For

A range-based for loop visits each value in a collection.

range_for.cpp

#include <iostream>
#include <string>

int main() {
    int threshold = ;
    int values[4] = {3, 5, 7, 9};
    int count = 0;

    for (int value : values) {
        if (value >= threshold) {
            count++;
        }
    }

    std::cout << "threshold=" << threshold << std::endl;
    std::cout << "count=" << count << std::endl;
    return 0;
}

#include <iostream>
#include <string>

int main() {
    int threshold = ;
    int values[4] = {3, 5, 7, 9};
    int count = 0;

    for (int value : values) {
        if (value >= threshold) {
            count++;
        }
    }

    std::cout << "threshold=" << threshold << std::endl;
    std::cout << "count=" << count << std::endl;
    return 0;
}

#include <iostream>
#include <string>

int main() {
    int threshold = ;
    int values[4] = {3, 5, 7, 9};
    int count = 0;

    for (int value : values) {
        if (value >= threshold) {
            count++;
        }
    }

    std::cout << "threshold=" << threshold << std::endl;
    std::cout << "count=" << count << std::endl;
    return 0;
}

range-based for Use `for (int value : values)` when the loop needs each element but not its index.