#include "stdio.h"
#include "math.h"
#define pi 3.1415926
int main(int argc,char *argv[]){
double x,y,t=pi/2;
printf("Input x(R:)...\nx=");
scanf("%lf",&x);
if(x<-t)
y=5+x*x*x+x*x*x+cos(x)*3;
else if(-t<=x && xy=(x-1)/(x+2)*(x-1)/(x+2)*(x-1)/(x+2)+x+x+x+x+x;
else
printf("%g\n",y=sqrt(x+sin(x+x+x)));
printf("y≈%g\n",y);
return 0;
}
运行样例: