Compilare: user.cpp: In function ‘void afis2(int)’: user.cpp:25:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (put<=b/p2) ^ user.cpp:33:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (put>=a&&put<=b&&ok==1)//&&s11==s12) ^ user.cpp:33:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (put>=a&&put<=b&&ok==1)//&&s11==s12) ^ user.cpp:14:11: warning: unused variable ‘s11’ [-Wunused-variable] int i,s11=0,s12=0,p2,ok; ^ user.cpp:14:17: warning: unused variable ‘s12’ [-Wunused-variable] int i,s11=0,s12=0,p2,ok; ^ user.cpp: In function ‘void afis()’: user.cpp:60:18: warning: iteration 11u invokes undefined behavior [-Waggressive-loop-optimizations] sol[i]=-1; ^ user.cpp:58:5: note: containing loop for (i=1;i<=15;i++) ^