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

问题描述

我试图找出一个结构到底是什么并遇到了一个问题，所以我真的有两个问题:

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

1) 'sara' 中保存了什么?它是指向结构的第一个元素的指针吗?

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

2) 更有趣的问题:为什么不编译?GCC 说test.c:10: error: incompatible types in assignment"，我不知道为什么......(这部分已经被你的回答解决了，太好了！)

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
",sara);

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


}

感谢您的帮助！

推荐答案

这与结构无关 - C 中的数组不可赋值:

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

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

你需要使用strcpy:

you need to use strcpy:

strcpy( a, "foo" );

或在您的代码中:

strcpy( sara.first, "Sara" );

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