Question

decimal expression In regex​

Answer 1

Answer:

regular expression for a decimal number needs to checks for one or more numeric characters (0-9) at the start of the string, followed by an optional period, and then followed by zero or more numeric characters (0-9). This should all be followed by an optional plus or minus sign.

Answer 2

Answer:

Any rational number can be expressed in decimal base. This expression is, in a colloquial way, what most the people understand by a number with a comma.