字符数组的结构 - 不兼容的分配？ [英] Char array in a struct - incompatible assignment?

问题描述

我试图找出什么是真正的结构是，撞上了问题，所以我真的有2个问题：

I tried to find out what a struct really 'is' and hit a problem, so I have really 2 questions:

1）什么是保存在萨拉？它是一个指向该结构的第一个元素？

1) What is saved in 'sara'? Is it a pointer to the first element of the struct?

2）更有趣的问题：为什么不把它编译？
GCC说test.c以10：错误：不兼容的类型分配，我想不通为什么...
（这部分已经解决了你的答案已经，太棒了！）

2) The more interesting question: Why doesn't it compile? GCC says "test.c:10: error: incompatible types in assignment" and I can't figure out why... (This part has been solved by your answers already, great!)

#include <stdio.h>

struct name {
    char first[20];
    char last[20];
};

int main() {
    struct name sara;
    sara.first = "Sara";
    sara.last = "Black";
    printf("struct direct: %x\n",sara);

    printf("struct deref: %x\t%s\n", *sara, *sara);


}

感谢您的帮助！

推荐答案

这无关与结构 - 在C数组不分配：

This has nothing to do with structs - arrays in C are not assignable:

char a[20];
a = "foo";   // error

您需要使用strcpy的：

you need to use strcpy:

strcpy( a, "foo" );

或你的code：

strcpy( sara.first, "Sara" );

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