字符串转换
#include <iostream>
#include<sstream>
#include<string>
using namespace std;
int main()
{
char p[] = "12344";
string m = "12344";
int q[] = { 1,2,3 };
bool w1 = (p[1] == m[1]);
bool w2 = (p[1] == q[1]);
cout << w1 << " " << w2 << endl;
cout << (p[1]-'\0') * 10 << endl;
cout << m[1] * 10 << endl;
double a = 123.32;
string s = to_string(a);//数转化为字符串
cout << s[1] * 10 << endl;
cout << s << endl;
cout << stod(s)*10 << endl;//字符串转换为double
return 0;
}