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| #include <iostream>
#include <fstream>
#include <sstream>
#include <stdexcept>
using namespace std;
int main(int argc, char *argv[])
{
if(argc != 3){
string err_info;
ostringstream oss(err_info);
oss << argv[0] << " dir1/file1 dir2/file2" << endl;
cerr << oss.str();
return -1;
}
string in = argv[1];
string out = argv[2];
string content;
ifstream ifs(in.c_str());
ofstream ofs(out.c_str());
if (!ifs) {
cerr << "error: unable to open input file: "
<< in << endl;
return -1;
}
if (!ofs) {
cerr << "error: unable to open output file: "
<< out << endl;
return -1;
}
while(getline(ifs, content)){
ofs << content << endl;
}
}
|
