C++ For Loop: Complete Guide

The for loop statement in C++ can be used in the following format:

for (初始化; 条件判断; 增量) {
    // 循环体语句
}

The initialization part is executed once before the loop starts, to initialize the loop control variable; the condition check part is executed before each loop starts, to determine whether to continue the loop; the increment part is executed after each loop ends, to update the loop control variable.

Here is an example of using a for loop to output numbers 1 to 10:

#include <iostream>

int main() {
    for (int i = 1; i <= 10; i++) {
        std::cout << i << " ";
    }
    std::cout << std::endl;
    return 0;
}

The output is: 1 2 3 4 5 6 7 8 9 10.

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