Eroare de compilare: user.cpp: In function ‘void insertsort(int*, int)’: user.cpp:8: error: ‘A’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:52: error: ‘ifstream’ was not declared in this scope user.cpp:52: error: expected ‘;’ before ‘read’ user.cpp:53: error: ‘ofstream’ was not declared in this scope user.cpp:53: error: expected ‘;’ before ‘write’ user.cpp:58: error: ‘read’ was not declared in this scope user.cpp:67: error: ‘write’ was not declared in this scope