某些函数原型及其用法

函数名: log10功  能: 对数函数log,以10为底用  法: 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;} 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;}