How to express cubic power in C language

The methods of expressing cubic power in C language include: using the pow() function, which accepts the base and the exponent and returns the exponent of the base. Use the pow() macro, which has the same function as the pow() function, but only applies to integer exponents, and the execution speed is faster.

Represents cubic power in C language

In C language, you can use the following two methods to express cubic power Method:

1. Use the pow() function

pow() The function accepts two parameters: base and exponent, and returns the base Exponential power. For example, to calculate 2 raised to the third power, you can use the following code:

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

int main() {
    double result = pow(2.0, 3.0);
    printf("2 的三次方为：%f\n", result);
    return 0;
}</code>

2. Use the pow() macro

The C language standard library also provides pow() macro, which has the same functionality as the pow() function. Macros are expanded during the preprocessing phase and therefore execute faster than function calls. However, it can only be used with integer exponents. For example, to calculate 2 raised to the third power, you would use the following code:

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

int main() {
    double result = pow(2, 3);
    printf("2 的三次方为：%f\n", result);
    return 0;
}</code>

Example:

Here is a more complete example using pow() Functions and macros calculate the cube of 2 respectively:

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

int main() {
    double result1 = pow(2.0, 3.0);
    double result2 = pow(2, 3);
    printf("使用 pow() 函数：%f\n", result1);
    printf("使用 pow() 宏：%f\n", result2);
    return 0;
}</code>

Output:

<code>使用 pow() 函数：8.000000
使用 pow() 宏：8</code>

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