Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type ifstream fin ("stele.in"); ^ user.cpp:3:1: error: ‘ofstream’ does not name a type ofstream fout ("stele.out"); ^ user.cpp: In function ‘int prim(int)’: user.cpp:14:9: warning: unused variable ‘ok’ [-Wunused-variable] int ok=0,i; ^ user.cpp: In function ‘int main()’: user.cpp:43:5: error: ‘fin’ was not declared in this scope fin>>k; ^ user.cpp:46:5: error: ‘fout’ was not declared in this scope fout<<subp(n)<<endl;} ^