题目:
![在这里插入图片描述](https://img-blog.csdnimg.cn/20181031125013146.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzU0MDQyNw==,size_16,color_FFFFFF,t_70)
#include <math.h>
int main()
{
double x,y;
scanf("%lf",&x);
if (x<0)
y=0.5*(-x);
else
if (x<10)
y=exp(x)+3;
else
if(x<20)
y=log10(x);
else
if (x<30)
y=pow(x,1.5);
else
if (x<50)
y=pow (x,0.5)-1;
else
y=3*cos(x);
printf("y=%lf\n",y);
return 0;
}
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