std::to_string

`<string>`
`std::string to_string( int value );`	(1)	( C++11)
`std::string to_string( long value );`	(2)	( C++11)
`std::string to_string( long long value );`	(3)	( C++11)
`std::string to_string( unsigned value );`	(4)	( C++11)
`std::string to_string( unsigned long value );`	(5)	( C++11)
`std::string to_string( unsigned long long value );`	(6)	( C++11)
`std::string to_string( float value );`	(7)	( C++11)
`std::string to_string( double value );`	(8)	( C++11)
`std::string to_string( long double value );`	(9)	( C++11)

1) , , buf std::sprintf(buf, "%d", value).

2) , , buf std::sprintf(buf, "%ld", value).

3) , , buf std::sprintf(buf, "%lld", value).

4) , , buf std::sprintf(buf, "%u", value).

5) , , buf std::sprintf(buf, "%lu", value).

6) , , buf std::sprintf(buf, "%llu", value).

7,8) , , buf std::sprintf(buf, "%f", value).

9) , , buf std::sprintf(buf, "%Lf", value).

value

,

#include <iostream>
#include <string>

int main()
{
    double f = 23.43;
    std::string f_str = std::to_string(f);
    std::cout << f_str << '\n';
}

:

23.430000

.

to_wstring

(C++11)

wstring
() []







(C++20)

(C++20)
(C++11)





(C++20)


/

(C++11)
(C++11)
(C++11)
(C++17)

cppreference.com

std::to_string

.