Write a C++ function named is ValidReal() that checks for a double-precision number. This kind of number can have an optional + or - sign, at most one decimal point (which can be the first character), and at least one digit between 0 and 9. The function should return a boolean value of true if the number entered is a real number, otherwise it should return a boolean value of false. Write a main function to test it out.

Write a C++ function named is ValidReal() that checks for a double-precision number. This kind of number can have an optional + or - sign, at most one decimal point (which can be the first character), and at least one digit between 0 and 9. The function should return a boolean value of true if the number entered is a real number, otherwise it should return a boolean value of false. Write a main function to test it out.

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter6: Modularity Using Functions

Section6.4: A Case Study: Rectangular To Polar Coordinate Conversion

Problem 9E: (Numerical) Write a program that tests the effectiveness of the rand() library function. Start by...

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