bile3.cpp:44: error: redefinition of 'std::ifstream fi' bile3.cpp:5: error: 'std::ifstream fi' previously declared here bile3.cpp:45: error: redefinition of 'std::ofstream fo' bile3.cpp:6: error: 'std::ofstream fo' previously declared here bile3.cpp: In function 'int main()': bile3.cpp:47: error: redefinition of 'int main()' bile3.cpp:16: error: 'int main()' previously defined here