Compilare: user.cpp: In function ‘void quicksort(int, int)’: user.cpp:32:26: warning: unused variable ‘tmp’ [-Wunused-variable] int i=left, j=right, tmp; ^ user.cpp: In function ‘int main()’: user.cpp:61:20: warning: unused variable ‘aa’ [-Wunused-variable] int n, i, k, nr, j,aa,u, v, bb, d; ^ user.cpp:61:23: warning: unused variable ‘u’ [-Wunused-variable] int n, i, k, nr, j,aa,u, v, bb, d; ^ user.cpp:61:26: warning: unused variable ‘v’ [-Wunused-variable] int n, i, k, nr, j,aa,u, v, bb, d; ^ user.cpp:61:29: warning: unused variable ‘bb’ [-Wunused-variable] int n, i, k, nr, j,aa,u, v, bb, d; ^ user.cpp:61:33: warning: unused variable ‘d’ [-Wunused-variable] int n, i, k, nr, j,aa,u, v, bb, d; ^ user.cpp: In function ‘double pivot(int, int)’: user.cpp:26:15: warning: ‘maxi’ may be used uninitialized in this function [-Wmaybe-uninitialized] p=p1+p2+p3-maxi-mini; ^ user.cpp:26:25: warning: ‘mini’ may be used uninitialized in this function [-Wmaybe-uninitialized] p=p1+p2+p3-maxi-mini; ^