函数名: log10
功 能: 对数函数log
用 法: #include <math.h>
double log10(double x);
程序例:
#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;
}