Provide brief descriptions about what the following functions in your program did: (1 points) fin.fail04 b. (1 points) fin.eofo c. (1 points) fin.geto d. (1 point) isdigit() e. (1 points) fin,putback04 #include #include using namespace std; int main() { ifstream fin; ofstream fout; string filename; const int HEADERLINES(5); cout > filename; fin.open(filename); if (fin.fail(){ cout > day >> WMax >> WMin >> WAvg >> rain >> snow; while (!fin.eof()) { if (wAvg > 50) ++above50; fin >> day >> WMax >> WMin >> WAvg >> rain >> snow; } cout