如何在C++中跳过读取文件中的行？

这更像你想要的吗？

#include 
#include 
#include 
#include 
#include 

using namespace std;

int main() 
{
    fstream fin("myfile.txt");
    string line;
    while(getline(fin, line)) 
    {
        //the following line trims white space from the beginning of the string
        line.erase(line.begin(), find_if(line.begin(), line.end(), not1(ptr_fun(isspace)))); 

        if(line[0] == '#') continue;

        int data;
        stringstream(line) >> data;

        cout << "Data: " << data  << endl;
    }
    return 0;
}