How do you output an error when the user enters anything other than a number?
47682
How to validate input using scanf
1085
How to output a counter with leading zeros?
54048
How to modify user input?
150196
C++ to check if user input is a number, not a character or a symbol
74709
How to elegantly check if a number is within a range?
100855
If an exception is raised ask again for input
86981
How can I write custom Exceptions?
120169
Expected identifier, string or number
77399
What is the best way to do input validation in C++ with cin?
118643
Validating input using java.util.Scanner
43229
How to check if a string contains only digits in Java
13700
Error handling in C code
33997
VBScript -- Using error handling
95242
How to read from input file (text file) and validate input as valid integer?
122935
Python cannot handle numbers string starting with 0. Why?
36779
How to make a field required to enter a specific number?
134046
C++ : Catch a divide by zero error