Compilare: main.cpp: In function 'int main()': main.cpp:20:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 1; i <= n; i++) ^~~ main.cpp:31:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' int x1, y1, x2, y2; ^~~