Eroare de compilare: main.cpp:2:1: error: 'ifstream' does not name a type 2 | ifstream in; | ^~~~~~~~ main.cpp:3:1: error: 'ofstream' does not name a type 3 | ofstream out; | ^~~~~~~~ main.cpp: In function 'void backtrack(int)': main.cpp:14:42: error: 'out' was not declared in this scope 14 | for(int f =1; f<=k; f++) out<<arr[f]<<" "; | ^~~ main.cpp:15:17: error: 'out' was not declared in this scope 15 | out<<endl; | ^~~ main.cpp: In function 'int main()': main.cpp:23:1: error: 'in' was not declared in this scope; did you mean 'n'? 23 | in.open("combinari.in"); | ^~ | n main.cpp:24:1: error: 'out' was not declared in this scope 24 | out.open("combinari.out"); | ^~~ Non zero exit status: 1