C语言中log函数怎么使用啊

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C语言中log函数怎么使用啊,第1张

1、C语言中,有两个log函数,分别为log10和log函数,具体用法如下:

2、函数名: log10

功 能: 对数函数log,以10为底

用 法: double log10(double x)

程序示例:

#include <math.h>

#include <stdio.h>int main(void)

{

double result

double x = 800.6872

result = log10(x)

printf("The common log of %lf is %lf\n", x, result)

return 0

}

3、函数名: log

功 能: 对数函数log,以e(2.71828)为底

用 法: double log(double x)

程序示例:

#include <math.h>

#include <stdio.h>int main(void)

{

double result

double x = 800.6872

result = log(x)

printf("The common log of %lf is %lf\n", x, result)

return 0

}

1、C语言中,有两个log函数,分别为log10和log函数,具体用法如下:

2、函数名: log10

功 能: 对数函数log,以10为底

用 法: double log10(double x)

程序示例:

#include <math.h>

#include <stdio.h>int main(void)

{

double result

double x = 800.6872

result = log10(x)

printf("The common log of %lf is %lf\n", x, result)

return 0

}

3、函数名: log

功 能: 对数函数log,以e(2.71828)为底

用 法: double log(double x)

程序示例:

#include <math.h>

#include <stdio.h>int main(void)

{

double result

double x = 800.6872

result = log(x)

printf("The common log of %lf is %lf\n", x, result)

return 0

}