String与数字及大小写转换

数字转字符串 

#include <sstream>#Include <string>string num2str(int i){        stringstream ss;        ss<<i;        return ss.str();}

字符串转数字：

int str2num(string s) {           int num;        stringstream ss(s);        ss>>num;        return num;}

String 大小写转换：

#include <string>#include <cctype>#include <algorithm>using namespace std;int main() {   string s = "Clare";  // toUpper  transform(s.begin(), s.end(), s.begin(), ::toupper);   // toLower  //transform(s.begin(),s.end(),s.begin(), ::tolower);   cout << s << endl; }

bitset  -> string

string s=c.to_string<char,char_traits<char>,allocator<char> >();

对拍

#include<iostream>#include<cstdio>using namespace std;int Cnt;int main(){  while(1){    printf("%d\n",++Cnt);    system("Rand >c.in");    system("Test <c.in >c.out");    system("Bl <c.in >s.out");    if(system("fc c.out s.out"))    {system("pause");break;}  }  return 0;}