C++ converting variable integer to string [duplicate]

Question

The problem I am encountering is the warning message I get when running the c++ .cpp code. Is there another way I can convert an integer to a string.

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Here is a snapshot of the code I am running, and where the problem is:

string empId2 = to_string(empId);

Either your library doesn't support to_string (introduced with c++11), or you need to compile in c++11 standards mode or later (-std=c++11 on gcc and clang). — user657267
– user657267, Commented Oct 27, 2015 at 0:58

user1949113 · Accepted Answer · 2015-10-27 01:11:18Z

1

You are missing a header file. Check your #include directives. That one is gcc's standart warning for cases like that.

answered Oct 27, 2015 at 1:11

user1949113

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Comments

Justice · Accepted Answer · 2015-10-27 00:59:38Z

0

This warning is shown when the function, in this case to_string is defined after it is used. Either move the definition of the function above or in a new file and include its header.

answered Oct 27, 2015 at 0:59

Justice

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2 Comments

Lightness Races in Orbit Over a year ago

Why would he define to_string himself?

Justice Over a year ago

He doesn't have to, he can include <string>

Karan Sheth · Accepted Answer · 2015-10-27 01:04:27Z

-1

You can use std ostringstream to convert from any type to string e.g:

std::ostringstream oss;
oss<<empId;
string empIdStr = oss.str();

answered Oct 27, 2015 at 1:04

Karan Sheth

1

1 Comment

Lightness Races in Orbit Over a year ago

Not "any type", and you missed the point of using to_string.

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