Răspuns:
using namespace std;
#include <iostream>
#include <stdlib.h>
#include <math.h>
int main() //programul principal
{
long a,b,c,x;
long ma,mg,tp;
cout<<"a ";cin>>a;
cout<<"b ";cin>>b;
cout<<"c ";cin>>c;
ma=(a+b)/2; //media aritmetica
cout<<"Media aritmetica "<<ma<<" \n";
mg=sqrt(a*b); //media geometrica
cout<<"Media geometrica "<<mg<<" \n";
if (a*a==b*b+c*c)
cout<<"a,b,c sunt pitagoreice ";
if (b*b==a*a+c*c)
cout<<"b,a,c sunt pitagoreice ";
if (c*c==a*a+b*b)
cout<<"c,a,b sunt pitagoreice ";
cout<<"x ";cin>>x;
if (x<-12)
cout<<"f(x)="<<(x*x-6*x);
if ((x>=-12) && (x<=-5))
cout<<"f(x)="<<(x*x*x*x+12);
if ((x>=-5) && (x<=2))
cout<<"f(x)="<<(2*x+12);
if (x>=2)
cout<<"f(x)="<<14;
}
