钱能书上的问题
#include<iostream>
#include<sstream>
#include<fstream>
#include<string>
using namespace std;
int main()
{
ifstream in("D:\aaa.txt");
for(string s;getline(in, s);)
{
int a, sum=0;
for(istringstream sin(s); sin>>a; sum += a );
cout<<sum<<endl;
}
}
里面aaa.txt文件应该放哪啊?