prevent user to input non-number in int, float...
so in those math programs we need the user to input some numbers, right?
but the problem is when he makes a mistake and puts a non-number into an int or float...
How do we prevent him from doing that, but keeping it as simple for the user as possible?
but the problem is when he makes a mistake and puts a non-number into an int or float...
How do we prevent him from doing that, but keeping it as simple for the user as possible?
I actually like this FAQ better for this particular problem. It is worth a read. You could use this example to create your own function for asking for input so that you can just call a function and have it return a value after the user finally enters something valid.
http://www.parashift.com/c++-faq-lite/input-output.html#faq-15.3
Article 9645 has some similar ideas but was written more to the purpose of converting a string to a number or vice versa.
http://www.parashift.com/c++-faq-lite/input-output.html#faq-15.3
Article 9645 has some similar ideas but was written more to the purpose of converting a string to a number or vice versa.
u can either call a function for wrong input and display the msg to input the correct one
or u can return some constant value for wrong inputs
or u can return some constant value for wrong inputs
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