int 和string、char互相转换(c++)

#include
using namespace std;

int m=10;
stringstream ss;
string str;
ss<>str;
//此时str="10"

// to_string example
#include    // std::cout
#include      // std::string, std::to_string

int main ()
{
  int m=10;
  string s2 = to_string(m);//这里可以是一个int型的变量
  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';
  return 0;
}

#include
#include
int main(){
    string str="234";
    int n=stoi(str);
    cout< 
int和char类型互相转换，仅限<10的数字进行转换 
int m=9;
char c=(char)(m+'0');
//此时c='9'