#include "stdafx.h"

#include<string>

#include<vector>

#include<iostream>

#include<sstream>

#include<stdio.h>

#include<stdlib.h>

using namespace std;

//sstream

string int2str1(int n){

    ostringstream oss;

    oss << n;

    string s = oss.str();

    return s;

}

//sprintf

string int2str2(int n){

    char temp[];

    sprintf_s(temp, "%d", n);

    string str = temp;

    return str;

}

//sstream

int str2int1(string s){

    int n;

    istringstream iss;

    iss.clear();

    iss.str(s);

    iss >> n;

    return n;

}

//sscanf

int str2int2(string s){

    int n;

    sscanf_s(s.c_str(), "%d", &n);  //scanf前面加s用于把str输入到n中

    return n;

}

//stoi

int str2int3(string s, int base){ // base:进制

    int n = stoi(s, nullptr, base);

    return n;

}

//c_str

const char* str2Cchar(string s){

    //const char* ss = s.c_str(); //出错，因为s会被析构，ss指向垃圾内容

    char c[];

    strcpy_s(c, s.c_str());

    return c;

}

//atoi

int Cchar2int(const char* s){

    //char buffer[100];

    int n = atoi(s);

    return n;

}

char* int2char(int n){

    char buffer[];

    _itoa_s(n, buffer, );

    return buffer;

}

int _tmain(int argc, _TCHAR* argv[])

{

    //cout << str2int1("1234") << endl;

    //cout << str2int2("1234") << endl;

    //cout << int2str1(1234) << endl;

    //cout << int2str1(1234) << endl;

    //string s1 = "123455";

    //const char* ss1 = str2Cchar(s1);

    //char s2[] = "123455";

    //const char* ss2 = s2;

    //cout << Cchar2int(ss2) << endl;

    char* c = int2char();

    cout << *c << endl;

    return ;

}