Compilare: main.cpp: In function 'int p5(int)': main.cpp:11:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p5<=a) ~~^~~ main.cpp: In function 'int main()': main.cpp:21:26: warning: overflow in implicit constant conversion [-Woverflow] int st=5*p,dr=INT64_MAX-1,mid,s; ^ main.cpp:37:4: warning: 'mid' may be used uninitialized in this function [-Wmaybe-uninitialized] s=mid-mid%5; ~^~~~~~~~~~