C programming : read string and test if it's real number?

Question

1.00/5 (2 votes)

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Example: A string: 76y8y98
ERROR
A string: -67.112
-67.112

What I have tried:

i tried to read the string and use for loop to find character in string but i've tried a lot of ways to test if it's real number but nothing seem to work. i'm a beginner thanks.

Posted 22-Dec-17 6:14am

Member 13590330

Updated 22-Dec-17 6:25am

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Comments

jeron1 22-Dec-17 12:25pm

Update your question and post the code that you tried.

Richard MacCutchan 22-Dec-17 12:33pm

You need to split the string at each y, and that gives you three integral numbers. How you got to -67.112 is a mystery.

Rick York 22-Dec-17 13:32pm

If it is a real number it will have a decimal point, right?

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Kenneth Haugland · Answer 1 · 2017-12-22T06:24:00

Solution 1

Double.TryParse Method (String, Double) (System)[^]

Posted 22-Dec-17 6:24am

Kenneth Haugland

Comments

Rick York 22-Dec-17 13:30pm

I don't think that is usable in a C program.