How to express the nth power of a in C language

In C language, the pow() function is used to calculate the nth power of a. The base a needs to be used as base and the exponent n needs to be passed to the function as exponent. For example, to calculate 2 raised to the 5th power, call pow(2, 5).

The nth power of a in C language

In C language, use the pow() function to calculate a to the nth power. The prototype of this function is:

<code class="c">double pow(double base, double exponent);</code>

where:

• base: base a
• exponent: exponent n

To calculate a To the power n, you simply pass a as the base and n as the exponent to the pow() function. For example:

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

int main() {
  // 计算 2 的 5 次方
  double result = pow(2, 5);

  // 输出结果
  printf("2 的 5 次方是 %f\n", result);

  return 0;
}</code>

Output:

<code>2 的 5 次方是 32.000000</code>

Note:

##pow() function returns a double type value.
• If exponent is negative, the function will return NaN (not a number).
• If base is 0 and exponent is negative, this function will return infinity.

The above is the detailed content of How to express the nth power of a in C language. For more information, please follow other related articles on the PHP Chinese website!