Compilare: main.cpp: In function 'int main()': main.cpp:33:13: warning: variable 'nrprime' set but not used [-Wunused-but-set-variable] int a, b, nrprime, i, cnt, max1, nrsol, val, x, rad, j, nrdiv; ^~~~~~~ main.cpp: In function 'int numereprime()': main.cpp:24:12: warning: iteration 44998 invokes undefined behavior [-Waggressive-loop-optimizations] if (c[i] == 0) ~~~^ main.cpp:23:17: note: within this loop for (i = 2; i <= 45000; i++) ~~^~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:18: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << val << " " << max1 << " " << nrsol; ^~~