The right approach:-

 cin>>n;
if(n>=1 && n<=9)
{
    if(n==1)
        cout<<"one";
    if(n==2)
       cout<<"two";
    if(n==3)
       cout<<"three";
    if(n==4)
       cout<<"four";
    if(n==5)
       cout<<"five";
    if(n==6)
        cout<<"six";
    if(n==7)
        cout<<"seven";
    if(n==8)
        cout<<"eight";
    if(n==9)
        cout<<"nine";
}
else
{
    cout<<"Greater than 9";
}

return 0;

}