How To Make C Only Accept Numbers

/in /by

How to make C only accept numbers? If I type 432,234,21. Then the program works just fine. However if I type any kind of string it automatically loops goes inside the else statement that says “Sorry too many unsuccessful attempts”.

{    counter = ;    pinNumber = ;    (counter<){        ( , );        pinNumber=(, &pinNumber);        (pinNumber == ){            counter=;        }{            ++counter;            (counter<){                ();            }{                ();                ();            }        }    }}

 
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