重新分配结构用C [英] reassign struct in C

问题描述

我是新的C和结构试验。我创建了一个结构之后，才可能有大括号重新分配呢？

  typedef结构{
    INT高度;
    INT年龄;
}人;INT主要（无效）
{
    人比尔= {100,35};
    比尔= {120,34}; //错误：在{令牌预计前pression
    比尔= {个人} 120,34; //错误：人之前的预期前pression    返回0;
}
 

解决方案

不是直接的，但C99具有该复合文字

  =账单（人）{} 120,34;
 

你甚至可以做得更有可读性使用指定的初始化像

  =账单（人）{.height = 120。年龄= 34，};
 

I'm new to C and experimenting with structs. After I've created a struct, is it possible to reassign it with curly brackets?

typedef struct {
    int height;
    int age;
} Person;

int main (void)
{
    Person bill = {100,35};
    bill = {120,34}; // error: expected expression before ‘{’ token
    bill = Person {120,34}; // error: expected expression before ‘Person’

    return 0;
}

解决方案

Not directly, but C99 has compound literals for that

bill = (Person){120,34};

you could even do things more readable by using designated initializers like

bill = (Person){ .height = 120, .age = 34, };

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