Compilare: main.cpp: In function 'int palindrom(int)': main.cpp:29:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp:27:5: warning: 'inv' may be used uninitialized in this function [-Wmaybe-uninitialized] if(a==inv) ^~ main.cpp: In function 'int main()': main.cpp:72:99: warning: array subscript is above array bounds [-Warray-bounds] a[1]=31,a[2]=28,a[3]=31,a[4]=30,a[5]=31,a[6]=30,a[7]=31,a[8]=31,a[9]=30,a[10]=31,a[11]=30,a[12]=31; ~~~~^