Răspuns:
#include<iostream>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
cout<<"a+b="<<a+b;
cout<<endl;
cout<<"a*b="<a*b;
return 0;
}
Explicație:
#include<iostream>
using namespace std;
int main(){
int a,b,c,E;
cin>>a>>b>>c;
E=a+b+c;
if(a>0)
cout<<"E="<<E;
if(a<0)
cout<<"b*c="<<b*c;
}