Eroare de compilare: user.cpp:1:1: error: ‘include’ does not name a type include <fstream> ^ user.cpp:4:1: error: ‘ifstream’ does not name a type ifstream fin("perm2.in"); ^ user.cpp:5:1: error: ‘ofstream’ does not name a type ofstream fout("perm2.out"); ^ user.cpp: In function ‘int main()’: user.cpp:9:5: error: ‘fin’ was not declared in this scope fin>>n; ^ user.cpp:26:5: error: ‘fout’ was not declared in this scope fout<<k; ^