Compilare: main.cpp: In function 'int rciur()': main.cpp:20:24: warning: statement has no effect [-Wunused-value] ciur[j]==1; ~~~~~~~^~~ main.cpp:11:22: warning: unused variable 'j' [-Wunused-variable] long long int i, j; ^ main.cpp:23:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp:14:16: warning: iteration 749998 invokes undefined behavior [-Waggressive-loop-optimizations] ciur[i]=1; ~~~~~~~^~ main.cpp:13:14: note: within this loop for(i=4;i<=nmax;i+=2) ~^~~~~~