contoh source code fungsi if pada c++

#include<iostream.h>

int main()

{

                int nilai;

                cout<<"                Program Data Nilai"<<endl;

                cout<<"By Rani"<<endl;

                cout<<endl;

                cout<<"Masukkan Nilai Anda = ";

                cin>>nilai;

                if(nilai>=85 &&nilai <=100)

{

                cout<<"Nilai Anda ISTIMEWA"<<endl;

}

                else if(nilai>=75 && nilai <=84)

{

                cout<<"Nilai Anda BAIK"<<endl;

}

                else if(nilai>65 &&nilai<=74)

{

                cout<<"Nilai Anda KURANG BAIK"<<endl;

}

                else if(nilai>=50 &&nilai <=64)

{

                cout<<"Nilai Anda KURANG"<<endl;

}

                else if(nilai>=0 &&nilai <=49)

{

                cout<<"Nilai Anda Buruk"<<endl;

}

else

{

                cout<<"Tolong Masukkan Data Yang Benar"<<endl;

}

}