c++如何把一个数转换成字符串

1、头文件如果想要使用to_string函数我们需要定义头文件#include <string>

3、无符号数转换成字符串：语法：string to_string (unsigned val);

5、double 类型转换成字符串：语法：string to_string (double val);

6、来个实例具体说明：#include <坡纠课柩iostream>std::cout#include <string>int main () { std::string pi ="pi is "+ std::to_string(3.1415926); std::string perfect = std::to_string(1+2+4+7+14) +" is a perfect number"; std::cout << pi <<'\n'; std::cout << perfect <<'\n';return0;}