Compilare: main.cpp: In function 'bool cmp(const elem&, const elem&)': main.cpp:18:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 18 | if(a.x1 != b.x1) | ^~ main.cpp:20:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 20 | return (a.x2 < b.x2); | ^~~~~~