Eroare de compilare: main.cpp:4:1: error: 'ifstream' does not name a type 4 | ifstream f("sum.in"); | ^~~~~~~~ main.cpp:5:1: error: 'ofstream' does not name a type 5 | ofstream g("sum.out"); | ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:28:5: error: 'f' was not declared in this scope 28 | f>>n; | ^ main.cpp:32:9: error: 'g' was not declared in this scope 32 | g<<v[x]*2*x<<'\n'; | ^ main.cpp:37:5: error: 'g' was not declared in this scope 37 | g.close(); | ^ Non zero exit status: 1