Compilare: user.cpp: In function ‘int main()’: user.cpp:15:12: warning: operation on ‘i’ may be undefined [-Wsequence-point] A[i++]=i*i; ~^~ user.cpp:15:12: warning: operation on ‘i’ may be undefined [-Wsequence-point] user.cpp:17:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(A[i]==n) ~~~~^~~ user.cpp:28:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(A[i]<=n) i++; ~~~~^~~