这段C代码i == head->next=NULL:head->next = p; 提示错误lvalue required as left operand of assignment|,

这段C代码i == head->next=NULL:head->next = p; 提示错误lvalue required as left operand of assignment|,
这段C代码i == head->next=NULL:head->next = p; 提示错误lvalue required as left operand of assignment|,

这段C代码i == head->next=NULL:head->next = p; 提示错误lvalue required as left operand of assignment|,
意思是表达式中的=号左边应该有个运算符（或者变量）.