我正在做项目欧拉#22：

Using names.txt (right click and ‘Save Link/Target As…’),a 46K text
file containing over five-thousand first names,begin by sorting it
into alphabetical order. Then working out the alphabetical value for
each name,multiply this value by its alphabetical position in the
list to obtain a name score.

For example,when the list is sorted into alphabetical order,COLIN,
which is worth 3 + 15 + 12 + 9 + 14 = 53,is the 938th name in the
list. So,COLIN would obtain a score of 938 × 53 = 49714.

What is the total of all the name scores in the file?

使用Cygwin的gcc-g编译器编译下面的代码,答案是871129635.但是使用Visual Studio 2008,答案是正确的,871198282.为什么会这样？

@H_404_18@#include<iostream> #include<fstream> #include<vector> #include<algorithm> using namespace std; bool strCmp(string x,string y) { if(x.compare(y) == -1) return true; else return false; } int getscore(string s) { int score = 0; for(unsigned int i = 0; i < s.length(); i++) score += (((int) s.at(i)) - 64); return score; } int getTotalscore(vector<string> names) { int total = 0; for(unsigned int i = 0; i < names.size(); i++) total += (getscore(names[i]) * (i+1)); return total; } int main() { vector<string> names; ifstream namesFile("names.txt"); char curChar; string curName = ""; //get names from file if(namesFile.is_open()) { while(!namesFile.eof()) { curChar = namesFile.get(); if(isalpha(curChar)) curName.push_back(curChar); else { if(!curName.empty()) {//store finished name names.push_back(curName); curName.clear(); } } } } namesFile.close(); //alphabetize sort(names.begin(),names.end(),strCmp); //count up name scores cout << getTotalscore(names) << endl; return 0; }