Вивчайте Modify the For Loop Behavior in C

You can change the behavior of a for loop in C to fit different needs beyond simply counting up. Two common variations are decrementing loops and loops with multiple variables in the header.

A decrementing for loop counts downward, which is useful when you want to start from a higher number and end at a lower one. You can also declare and update more than one variable in the loop header to perform actions with two counters at the same time. This flexibility makes for loops powerful for a variety of programming tasks.

countdown.c

pair_variables.c


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#include <stdio.h>

int main() {
    // Decrementing for loop: counts down from 10 to 1
    for (int i = 10; i >= 1; i--) {
        printf("%d\n", i);
    }
    return 0;
}

Decrementing for loops are particularly useful for tasks like countdowns, reverse iteration through arrays, or any situation where you need to process elements from the end toward the beginning.

Using multiple variables in a for loop is helpful when working with two related sequences—such as finding matching pairs, mirroring elements, or performing parallel calculations. These variations make your code more expressive, efficient, and easier to read for specific use cases.

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