c语言程序,求 sin(x);错在哪了?#include #includevoid main(){#define pi 3.1415;double f;int a;scanf("%d",&a);f=sin(a/pi);printf("%f\n",f);}

c语言程序,求 sin(x);错在哪了?#include #includevoid main(){#define pi 3.1415;double f;int a;scanf("%d",&a);f=sin(a/pi);printf("%f\n",f);}
c语言程序,求 sin(x);
错在哪了?
#include
#include
void main()
{#define pi 3.1415;
double f;
int a;

scanf("%d",&a);
f=sin(a/pi);
printf("%f\n",f);
}

c语言程序,求 sin(x);错在哪了?#include #includevoid main(){#define pi 3.1415;double f;int a;scanf("%d",&a);f=sin(a/pi);printf("%f\n",f);}
#include
#include
#define pi 3.1415
void main()
{
double f;
int a;

scanf("%d",&a);
f=sin(a/pi);
printf("%lf\n",f);
}
改成上面的程序就可以了,#define pi 3.1415926 是编译预处理命令,要写在函数外,一般和#include 命令写在一起,而且不是c语句,不能加分号
f是double型,最好用%lf格式输出,否则可能会出错.