Compilare: user.cpp: In function ‘int main()’: user.cpp:14:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) ^ user.cpp:16:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) ^ user.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(v[i]==elem) ^ user.cpp:25:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<n;i++) ^ user.cpp:26:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i]==elem) ^ user.cpp:29:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(k>n/2) ^