Compilare: user.cpp: In function ‘void sdo(int, int)’: user.cpp:33:28: warning: unused variable ‘ok’ [-Wunused-variable] int p=pivot(left, right), ok, tmp, i=left, j=right; ^ user.cpp: In function ‘int main()’: user.cpp:61:15: warning: variable ‘fout’ set but not used [-Wunused-but-set-variable] FILE *fin, *fout; ^ user.cpp: In function ‘int pivot(int, int)’: user.cpp:27:15: warning: ‘maxi’ may be used uninitialized in this function [-Wmaybe-uninitialized] p=p1+p2+p3-maxi-mini; ^ user.cpp:27:25: warning: ‘mini’ may be used uninitialized in this function [-Wmaybe-uninitialized] p=p1+p2+p3-maxi-mini; ^ user.cpp: In function ‘int main()’: user.cpp:77:26: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d",s-k*(k-1)/2); ^