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2013-12-16 12:17
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c语言结构体中指针数组怎样赋值

定义一个结构体
struct AS
{
char *p[1];
};
怎样用gets函数给指针数组赋值呢?

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1条回答 默认 最新

  • gaintsord
    gaintsord 2013-12-17 03:39
    已采纳

    看Unix/Linux上的man:

    Standard C Library Functions gets(3C)
    NAME
    gets, fgets - get a string from a stream

    SYNOPSIS
    #include

     char *gets(char *s);
    
     char *fgets(char *s, int n, FILE *stream);
    

    DESCRIPTION
    The gets() function reads bytes from the standard input
    stream (see intro(3)), stdin, into the array pointed to by
    s, until a newline character is read or an end-of-file con-
    dition is encountered. The newline character is discarded
    and the string is terminated with a null byte.
    ....

    gets是标准库函数,要求传入的是一个数组的地址。其实是要求caller应当分配空间给他。你的结构体中指针数组指向了已经分配好的内存吗?如果没有就别想了。想用就自己先给他空间

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