Convert uint64_t to std::string

问题:

How can I transfer uint64_t value to std::string? I need to construct the std::string containing this value For example something like this:

void genString(uint64_t val) {       std::string str;       //.....some code for str        str+=(unsigned int)val;//???? } 

Thank you

回答1:

use either boost::lexical_cast or std::ostringstream

e.g.:

str += boost::lexical_cast<std::string>(val); 

or

std::ostringstream o; o << val; str += o.str(); 

回答2:

In C++ 11 you may just use:

std::to_string() 

it's defined in header

http://www.cplusplus.com/reference/string/to_string/

回答3:

I use something like this code below. Because it's a template it will work with any type the supports operator<< to a stream.

#include <sstream>  template <typename T> std::string tostring(const T& t) {     std::ostringstream ss;     ss << t;     return ss.str(); } 

for example

uint64_t data = 123; std::string mystring = tostring(data); 

回答4:

string genString(uint64_t val) {    char temp[21];    sprintf(temp, "%z", val);    return temp; } 

文章来源: Convert uint64_t to std::string