如何声明数组与任意大小 [英] How to declare an array with an arbitrary size

问题描述

好吧，这是一个C语言编程作业的问题。但我确实被卡死。

Ok, this is a C programming homework question. But I'm truly stuck.

我要求用户输入文字，然后我插入输入到一个数组，但我不能有超过的话的用户类型数的任何控制。

I ask the user to input words, and then I insert the input into an array, but I can't have any control over the number of words the user types.

我猜我问的是你如何申报在C数组没有宣布它的长度和不要求用户的长度应该是什么。

I guess what I'm asking is how do you declare a an array in C without declaring its length and without asking the user what the length should be.

我知道这牵扯到使用malloc，但是如果你能给我如何做到这一点的一些例子，我真的AP preciate它。

I know this has something to do with malloc, but if you could give me some examples of how to do this, I would really appreciate it.

推荐答案

您可以像每次realloc的吧：

You can realloc it every time like:

int size = 0;
char **array = malloc(0);
while(/* something */)
{
    char *string = // get input
    size++;
    array = realloc(array, size * sizeof(char*));
    array[size - 1] = string;
}

或在块，如果你关心速度。

Or in chunks if you care about speed.

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