When compiling my program below, I'm getting an error message which I don't really So far, all I'm wanting my code to do is read in a file specified from the command line, and then output a new file with the name changed to having an 'o' at the end.
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
string output_file_name(string file_name)
{
string output_file_name;
file_name.pop_back();
string ch = "o";
output_file_name=file_name + ch;
return output_file_name;
}
int main(int argc, char **argv)
{
string file_name;
file_name = argv[1];
ifstream input_file(file_name);
ofstream output_file(output_file_name(file_name));
if(input_file.is_open())
{
string line;
while(getline(input_file, line))
{
//will put code here in future
}
}
input_file.close();
return 0;
}
ERROR:
D:\visual studio\VC\Tools\MSVC\14.30.30705\include\string(36): warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc
D:\visual studio\VC\Tools\MSVC\14.30.30705\include\string(83): note: see reference to function template instantiation 'std::basic_istream<char,std::char_traits<char>> &std::getline<char,std::char_traits<char>,std::allocator<char>>(std::basic_istream<char,std::char_traits<char>> &&,std::basic_string<char,std::char_traits<char>,std::allocator<char>> &,const _Elem)' being compiled
with
[
_Elem=char
]
preprocess.cpp(47): note: see reference to function template instantiation 'std::basic_istream<char,std::char_traits<char>> &std::getline<char,std::char_traits<char>,std::allocator<char>>(std::basic_istream<char,std::char_traits<char>> &,std::basic_string<char,std::char_traits<char>,std::allocator<char>> &)' being compiled