Compilare: main.cpp: In function 'int main()': main.cpp:12:9: warning: statement has no effect [-Wunused-value] fin >> n; ~~~~^~~~ main.cpp:14:13: warning: statement has no effect [-Wunused-value] fin >> x; ~~~~^~~~ main.cpp:11:9: warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, sum = 0, best_sum = -1e9, index, beg, fin, x; ^ main.cpp:18:16: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] sum += x; ^ main.cpp:26:49: warning: 'fin' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << best_sum << " " << beg << " " << fin; ^ main.cpp:26:39: warning: 'beg' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << best_sum << " " << beg << " " << fin; ^~~