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C 数学函数


数学函数

还提供了一系列数学函数,可用于对数字执行数学运算。

要使用它们,您必须在程序中包含 math.h **头文件**

#include <math.h>

平方根

要查找数字的平方根,请使用 sqrt() 函数

示例

printf("%f", sqrt(16));
尝试一下 »

四舍五入

ceil() 函数将数字向上舍入到最接近的整数,而 floor() 方法将数字向下舍入到最接近的整数,并返回结果

示例

printf("%f", ceil(1.4));
printf("%f", floor(1.4));
尝试一下 »

pow() 函数返回 *x* 的 *y* 次方(*xy*)的值

示例

printf("%f", pow(4, 3));
尝试一下 »

完整数学参考

有关数学函数的完整参考,请访问我们的 C <math.h> 库参考



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