#include <iostream>
#include <sstream>

using namespace std;
int main(int argc, char *argv[])
{
    ostringstream filename;
    for (int i=0; i<10; i++)
    {
        filename.str("");
        filename << "Table" << i << ".txt";
        cout << filename.str() << endl;
    }

    return 0;
}

输出

Output

Table0.txt
Table1.txt
Table2.txt
Table3.txt
Table4.txt
Table5.txt
Table6.txt
Table7.txt
Table8.txt
Table9.txt