Problem2178--Determine if it is a decimal number

2178: Determine if it is a decimal number

Time Limit: 1 Sec  Memory Limit: 128 MB
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Description

Write a function definition for a isDigit function that takes one argument of type char and returns a bool value. The function returns true if the argument is a decimal digit; otherwise it returns false.

Input

one argument of type char

Output

a bool value

Sample Input Copy 

9

Sample Output Copy 

True

Source/Category

21 
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