C 언어에서 x의 n승을 쓰는 방법

<code class="c">double pow(double x, int n);</code>

<code class="c">#include <stdio.h>
#include <math.h>

int main() {
    double x = 2.5;
    int n = 3;

    double result = pow(x, n);

    printf("%f 的 %d 次方是 %f\n", x, n, result);

    return 0;
}</code>

<code class="c">double pow(double x, int n) {
    double result = 1.0;

    for (int i = 0; i < n; i++) {
        result *= x;
    }

    return result;
}</code>

<code class="c">#include <stdio.h>

int main() {
    double x = 2.5;
    int n = 3;

    double result = pow(x, n);

    printf("%f 的 %d 次方是 %f\n", x, n, result);

    return 0;
}</code>