Compilare: main.cpp: In function 'int main()': main.cpp:15:44: warning: variable 'p' set but not used [-Wunused-but-set-variable] int a, b, i, j, nr, max1, val, ct, cp, p, div, exp; ^ main.cpp:31:18: warning: iteration 44998 invokes undefined behavior [-Waggressive-loop-optimizations] if(prim[i]==0) ~~~~~~^ main.cpp:29:15: note: within this loop for(i=2; i<=45000; i++) ~^~~~~~~ main.cpp:18:38: warning: iteration 22498 invokes undefined behavior [-Waggressive-loop-optimizations] for(i=4; i<=45000; i=i+2) prim[i]=1; ~~~~~~~^~ main.cpp:18:15: note: within this loop for(i=4; i<=45000; i=i+2) prim[i]=1; ~^~~~~~~ main.cpp:87:34: warning: 'ct' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<val<<' '<<max1<<' '<<ct; ^ main.cpp:87:16: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<val<<' '<<max1<<' '<<ct; ^~~