Eroare de compilare: user.cpp:5:13: error: variable ‘std::ifstream fin’ has initializer but incomplete type ifstream fin("sdo.in"); ^ user.cpp:6:14: error: variable ‘std::ofstream fout’ has initializer but incomplete type ofstream fout("sdo.out"); ^ user.cpp: In function ‘int main()’: user.cpp:12:20: error: ‘n’ was not declared in this scope for(int i=1;i<=n;i++) ^ user.cpp:14:16: error: ‘n’ was not declared in this scope sort(a+1,a+n); ^ user.cpp:14:17: error: ‘sort’ was not declared in this scope sort(a+1,a+n); ^ user.cpp:10:11: warning: unused variable ‘m’ [-Wunused-variable] int k,m; ^