EQL
if (EQL(operator[i], p))
if (EQL(r1, "0") || EQL(r1, "")) {
if (EQL(r2, "0") || EQL(r2, ""))
if (EQL(r1, "0") || EQL(r1, ""))
else if (EQL(r2, "0") || EQL(r2, ""))
if(EQL(operator[i], p))
if(EQL(r1, "0")
|| EQL(r1, ""))
if(EQL(r2, "0")
|| EQL(r2, ""))
if(EQL(r1, "0")
|| EQL(r1, ""))
else if(EQL(r2, "0")
|| EQL(r2, ""))