show_cos.c

不错书对C++/C程序员很有用的大家不要错过.

#include <stdio.h>
#include <math.h>

void main(void)
 {
   printf("cosine of pi/2 is %6.4f\n", cos(3.14159/2.0));
   printf("cosine of pi is %6.4f\n", cos(3.14159));
 }