Compilare: user.cpp: In function ‘int main()’: user.cpp:23:21: warning: suggest parentheses around comparison in operand of ‘==’ [-Wparentheses] if(j==i==k || i==j || i==k || j==k) ^ user.cpp:11:15: warning: unused variable ‘ec’ [-Wunused-variable] int i,j,k,ec=0,is=0,dr=0,tr=0; ^ user.cpp:11:20: warning: unused variable ‘is’ [-Wunused-variable] int i,j,k,ec=0,is=0,dr=0,tr=0; ^ user.cpp:11:25: warning: unused variable ‘dr’ [-Wunused-variable] int i,j,k,ec=0,is=0,dr=0,tr=0; ^