我如何阅读直到文件末尾? [英] How do I read until the end of file?

问题描述

在C语言中，我可以读取输入并在程序到达文件末尾(EOF)时停止程序.像这样.

In C, I can read an input and stop the program when it reaches the end of file (EOF). Like so.

#include <stdio.h>

int main(void) {
    int a;       
    while (scanf("%d", &a) != EOF)
        printf("%d\n", a);
    return 0;
}

如何在Lua中做到这一点?

How can I do that in Lua?

推荐答案

Lua文档提供了大量有关文件读取和其他IO的详细信息.要读取整个文件:

The Lua Documentation features a ton of details on file-reading and other IO. For reading an entire file:

t = io.read("*all")

显然会读取整个文件.该文档提供了逐行阅读示例，希望对您有所帮助.

apparently reads an entire file. The documentation has examples on reading line-by-line etc. Hope this helps.

读取文件的所有行并为每个行编号(逐行)的示例:

   local count = 1
    while true do
      local line = io.read()
      if line == nil then break end
      io.write(string.format("%6d  ", count), line, "\n")
      count = count + 1
    end

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