Compilare: user.cpp: In function ‘void Citire()’: user.cpp:14:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1, x, k = 1; i <= n; i++) ^ user.cpp:17:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(x == val[k-1]) ^ user.cpp: In function ‘int main()’: user.cpp:44:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < n; i++) ^