Compilare: main.cpp: In function 'void print(SQ)': main.cpp:23:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(auto it : v) cerr << it << ' '; cerr << '\n'; ^~~ main.cpp:23:41: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(auto it : v) cerr << it << ' '; cerr << '\n'; ^~~~