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
}
运行结果
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
}
运行结果
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
}