You can use for loop,while loop and do-while loop on your code but frankly if you dont use array your input in age variable will change to your last input.by the way you forgot to declare you age as int.But you can make more variable to indicate age for you not to make array if you want ^_^
Try this one and this time lets use for loop...
int times,age,ages[100];
cout<<"Enter times you want to repeat: ";
cin>>times;
for(int a=0;a<times;a++)
{
cout<<"Hello what age are you? ";
cin>>age;
ages[a] = age;
}
for(int b=0;b<times;b++)
{
cout<<"You input: "<<ages[b]<<endl;
}