Compilare: main.cpp: In function 'void c1()': main.cpp:16:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while ((masca&x)==0) ^~~~~ main.cpp:18:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' if (i==4) ^~ main.cpp: In function 'int main()': main.cpp:50:9: warning: unused variable 'x' [-Wunused-variable] int x; ^