Compilare: user.cpp: In function ‘int binsearch(int)’: user.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+step<n && sum[i+step]<=x) ^ user.cpp: In function ‘int main()’: user.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i+step>S) step>>=1; ^ user.cpp:61:22: warning: ‘best’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d",best); ^