Compilare: user.cpp: In function ‘void Read()’: user.cpp:76:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &op, &n); ^ user.cpp:79:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V[i]); ^ user.cpp: In function ‘void Solve2()’: user.cpp:50:31: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] for( n2 = last + 1; n2 <= n && V[n2] == V[last + 1]; ++n2, ++elem2); ^ user.cpp:48:32: warning: ‘first’ may be used uninitialized in this function [-Wmaybe-uninitialized] for( n1 = first - 1; n1 > 0 && V[n1] == V[first - 1]; --n1, ++elem1); ^