neuroni.cpp:2: error: 'ifstream' does not name a type neuroni.cpp:3: error: 'ofstream' does not name a type neuroni.cpp: In function 'int main()': neuroni.cpp:14: error: 'f' was not declared in this scope neuroni.cpp:35: error: 'g' was not declared in this scope neuroni.cpp:38: error: 'g' was not declared in this scope