#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[64];
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[20];
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[100];
_itoa_s(n, buffer, 10);
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(1234);
cout << *c << endl;
return 0;
}
原文链接: https://www.cnblogs.com/Chilly2015/p/5638250.html
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