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Just for info. The code does have a problem. Try entering a non-numeric value for the number of cars.

Have you covered stream errors yet?

No. The maximum number is fixed at 20 - but the user enters the required number not greater than this. If the maximum is required to be more, then 20 can be changed to the required maximum number.
...

The issue with arrays is that you have to declare their size at compile time - and with vectors you don't. So using an array you need to specify the maximum size as part of the code. In this case the...

See the reply in post #3 re use of a vector.

Have you come across the ternary ? operator yet?



double calculate_charges ( double h ) {

if ( h == 24 ) {

return 10.00;
}

double chg = 3 + (( h - 3 ) *0.50);

return chg;


Why not just


return 3 + (( h - 3 ) * 0.50);

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