Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp:2:20: error: fstream.h: No such file or directory user.cpp:4: error: ‘ifstream’ does not name a type user.cpp:5: error: ‘ofstream’ does not name a type user.cpp: In function ‘int nrprim(int)’: user.cpp:9: error: ‘sqrt’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:19: error: ‘fin’ was not declared in this scope user.cpp:25: error: ‘sqrt’ was not declared in this scope user.cpp:33: error: ‘cout’ was not declared in this scope