How to convert double to String?

Question

Can any body help me in converting a double value e.g. 0.000015 to string format in Xcode. so that i may use it as a string. In visual C++ we have to_string function but in Xcode it doesnt works. Regards

How about this? http://stackoverflow.com/questions/8495076/objective-c-stringvalue-from-double — Dannie, Jan 14 '14 at 18:21
ostringstream take char value. How ever i want to convert double or long double value to String. — khan, Jan 14 '14 at 18:21
_'ostringstream take char value'_ No, that's wrong! You can use the output `operator>>()` for any primitive type as usual! — πάντα ῥεῖ, Jan 14 '14 at 18:23
How can i use this, can you give example forexample my code is given on http://stackoverflow.com/questions/21118842/how-to-convert-long-double-to-string-format-in-xcode-or-how-to-solve-error-us — khan, Jan 14 '14 at 18:25
Use the output operator as you would do with `std::cout`, and get the string you want using `std::ostringstream::str()` method. — πάντα ῥεῖ, Jan 14 '14 at 18:28
when i use std::ostringstream::str(lr_value), it gives error, "call to non-static member function without an object argument" — khan, Jan 14 '14 at 18:32
See my answer how to use it. (There's also [documentation](http://en.cppreference.com/w/cpp/io/basic_ostringstream) available BTW). — πάντα ῥεῖ, Jan 14 '14 at 18:57

score 4 · Answer 1 · answered Jan 14 '14 at 18:50

4

If you have a compiler supporting C++11, then std::to_string() is what you want.

answered Jan 14 '14 at 18:50

jaredready

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thanks but i used the upper answer, as in this case when i change it to c++11 it give me some other errors...so i used the first one...thanks and regards – khan Jan 15 '14 at 10:47

score 1 · Accepted Answer · answered Jan 14 '14 at 18:56

1

You can make your 'homebrew' to_string() function very easy using std::stringstream:

template<typename T>
std::string to_string(T value)
{
    std::ostringstream oss;

    oss << value;
    return oss.str();
}

answered Jan 14 '14 at 18:56

πάντα ῥεῖ

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Thanks alot Bro... It worked, Sorry for late replying...just tried it now... thanks – khan Jan 15 '14 at 10:40

How to convert double to String?

2 Answers2