Convert string to long double

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I want to convert a string contains only long double number like :
string s = "230.2356666156"; to a long double number , so how can i do so ?
note : i'm not c++11 , and i dont want to cout because i know to cout using setprecision()
any help ?

What I have tried:

i've searched a lot but find nothing

Posted 5-May-17 6:08am

nader rihan

Updated 5-May-17 22:19pm

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[no name] 5-May-17 12:09pm

http://www.cplusplus.com/reference/cstdlib/strtold/

nader rihan 5-May-17 12:26pm

this is for c++11 only

[no name] 5-May-17 12:43pm

What is for C++ 11 only? The STANDARD functions that are available? They are called STANDARD functions for a reason.

Jochen Arndt 5-May-17 12:56pm

It has been introduced with C99 (it is a C standard library function).

But if you use the Microsoft compiler you are out of luck:
That does not support the long double type and the existing functions supporting long double behave like the corresponding double function versions.

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Richard MacCutchan · Answer 1 · 2017-05-05T22:19:00

Solution 1

<iomanip> functions[^].

Posted 5-May-17 22:19pm

Richard MacCutchan