Răspuns :
1.
#include <iostream>
using namespace std;
int main()
{
int a;
if(cin>>a)
cout<<a+7;
}
aici poti sa faci si asa
#include <iostream>
using namespace std;
int main()
{
int a;
cin>>a;
cout<<a+7;
}
2.
#include <iostream>
using namespace std;
int main()
{
int a,b,c,d;
cin>>a>>b>>c>>d;
cout<<a<<b<<c;
}
dupa ce pui cifrele in consola, trebuie sa pui spatiu intre ele ca sa mearga
3.
#include <iostream>
using namespace std;
int main()
{
int a;
if(cin>>a)
cout<<a*100<<" cm";
}
aici poti face si asa
#include <iostream>
using namespace std;
int main()
{
int a;
cin>>a;
cout<<a*100<<" cm";
}
4.
#include <iostream>
using namespace std;
int main()
{
int a,b,c;
cin>>a>>b>>c;
cout<<(a+b+c);
}