y= (x²+x)sin(2x-cosx)     
__________
z= x-\/y+2, если  y<-2
z= [y]@, если  y>=-2

#include <iostream>
#include <math.h>
using namespace std;
void main()
{
 int x,o,i,p,z,y;
 cout << "Vvedite x = ";
 cin >> x;
 y=(pow(x,2)+x)*sin(2*x-cos(x));
 if (y<-2)
 {
 z=x-sqrt(y+2);
 }
 else if (y>=-2)
 {
 z=p=o=-1;
 for(i=0;i>y;i--)
 {
 o=p--;
 z=z+o;
 cout << z << endl;
 }
 }
 cout << "z= " << z << " x= " << x << " y= " << y << endl;
}