Compilare: user.cpp: In function ‘int main()’: user.cpp:34:36: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(v[i]<v[i-1]&i!=0) ^ user.cpp:19:19: warning: unused variable ‘numech’ [-Wunused-variable] int ech=0,numech=sum/n,dif=0,step=0,maxi=0; ^ user.cpp:19:32: warning: unused variable ‘dif’ [-Wunused-variable] int ech=0,numech=sum/n,dif=0,step=0,maxi=0; ^ user.cpp:19:45: warning: unused variable ‘maxi’ [-Wunused-variable] int ech=0,numech=sum/n,dif=0,step=0,maxi=0; ^