Compilare: main.cpp: In function 'int main()': main.cpp:69:33: warning: 'app' may be used uninitialized in this function [-Wmaybe-uninitialized] 69 | if ( x == xp && app != '0') | ~~~~^~~~~~ main.cpp:67:60: warning: 'ap' may be used uninitialized in this function [-Wmaybe-uninitialized] 67 | if ( ap != 'x' && ap != 'y' && ap != 'z' && ap != 't') | ~~~^~~~~~