Compilare: user.cpp: In function ‘int mediana(int, int, int)’: user.cpp:20:14: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[i]>=v[j]&&v[i]<=v[k]||v[i]<=v[j]&&v[i]>=v[k])return i; ^ user.cpp:21:14: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[j]>=v[i]&&v[j]<=v[k]||v[j]<=v[i]&&v[j]>=v[k])return j; ^ user.cpp: In function ‘int partition(int, int)’: user.cpp:55:12: warning: ‘loc’ may be used uninitialized in this function [-Wmaybe-uninitialized] return loc; ^