Eroare de compilare: user.cpp:2:16: error: math: No such file or directory user.cpp: In function 'void sortv(long int*, long int*, int)': user.cpp:24: warning: unused variable 'j' user.cpp: In function 'int main()': user.cpp:45: error: 'ifstream' was not declared in this scope user.cpp:45: error: expected `;' before 'f' user.cpp:46: error: 'ofstream' was not declared in this scope user.cpp:46: error: expected `;' before 'g' user.cpp:47: error: 'f' was not declared in this scope user.cpp:62: error: 'pow' was not declared in this scope user.cpp:75: error: 'g' was not declared in this scope user.cpp:75: error: 'endl' was not declared in this scope