std::to_string
From cppreference.com
< cpp | string | basic string
Defined in header
<string>
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||
std::string to_string( int value );
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(1) | (since C++11) |
std::string to_string( long value );
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(2) | (since C++11) |
std::string to_string( long long value );
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(3) | (since C++11) |
std::string to_string( unsigned value );
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(4) | (since C++11) |
std::string to_string( unsigned long value );
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(5) | (since C++11) |
std::string to_string( unsigned long long value );
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(6) | (since C++11) |
std::string to_string( float value );
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(7) | (since C++11) |
std::string to_string( double value );
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(8) | (since C++11) |
std::string to_string( long double value );
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(9) | (since C++11) |
Converts a numeric value to std::string.
1) Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%d", value) would produce for sufficiently large
buf
.
2) Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%ld", value) would produce for sufficiently large
buf
.
3) Converts a signed decimal integer to a string with the same content as what std::sprintf(buf, "%lld", value) would produce for sufficiently large
buf
.
4) Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%u", value) would produce for sufficiently large
buf
.
5) Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%lu", value) would produce for sufficiently large
buf
.
6) Converts an unsigned decimal integer to a string with the same content as what std::sprintf(buf, "%llu", value) would produce for sufficiently large
buf
.
7,8) Converts a floating point value to a string with the same content as what std::sprintf(buf, "%f", value) would produce for sufficiently large
buf
.
9) Converts a floating point value to a string with the same content as what std::sprintf(buf, "%Lf", value) would produce for sufficiently large
buf
.
Contents |
[edit] Parameters
value | - | a numeric value to convert |
[edit] Return value
a string holding the converted value
[edit] Example
Run this code
#include <iostream> #include <string> int main() { double f = 23.43; std::string f_str = std::to_string(f); std::cout << f_str << '\n'; }
Output:
23.430000
[edit] See also
(C++11)
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converts an integral or floating point value to wstring (function) |
(C++11)(C++11)
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converts a string to an unsigned integer (function) |
(C++11)(C++11)(C++11)
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converts a string to a signed integer (function) |
(C++11)(C++11)(C++11)
|
converts a string to a floating point value (function) |