习题1-4 正弦和余弦(sin和cos)

#include <iostream>#include <stdio.h>#include <math.h>using namespace std;int main(){    double n;    double s,c;    double pi = 3.1415926535;    while(scanf("%lf",&n)!=EOF)    {        s=sin(n/180*pi);        c=cos(n/180*pi);        printf("%.3f %.3f\n",s,c);    }    return 0;}

/*三角函数只计算弧度（非角度）*/