Perulangan For

awal:
cout<<"Masukkan jumlah mahasiswa : ";
    cin>>x;
    if(x<=5){
        cout<<"============================"<<endl;
        goto inputan;
    }
    else{
        cout<<"Mahasiswa Kebanyakan Oe Nanti Pusing!"<<endl;
        cout<<"Max 5 Aja Oe!"<<endl<<endl;
        goto awal;
    }

    //=============================================inputan
    inputan:
    for(int z=1;z<=x;z++){
    cout<<"Masukkan NIM Mahasiswa ke "<<z<<" : ";
    cin>>f[z].nim;