一个vc++6.0中创建文件 写入数据的程序

Question

在C程序所在目录下建立一个文本文件first.txt,在文件中写入"This is the last class of C program.",在C程序中用“r”方式打开first.txt, 用"w" 方式打开另一个文件second.txt.将first.txt文件中的内容写到scond.txt中。

Answer 1

fopen打开文件，fgets逐行读取，fputs逐行写入

int mai<span class="hljs-meta">n</span>()
{
    <span class="hljs-keyword">FILE</span> <span class="hljs-comment">*fp1,*fp2;</span>
    fp1 = <span class="hljs-meta">fopen</span>(<span class="hljs-string">"first.txt"</span>,<span class="hljs-string">"r"</span>);
    fp2 = <span class="hljs-meta">fopen</span>(<span class="hljs-string">"second.txt"</span>,<span class="hljs-string">"w"</span>);
    <span class="hljs-keyword">if</span>(fp1 == <span class="hljs-keyword">NULL</span> || fp2 == <span class="hljs-keyword">NULL</span>)
        <span class="hljs-keyword">return</span> 0;
    char buf[200] = {0};
    fgets(buf,200,fp1);
    fputs(buf,fp2);
    <span class="hljs-meta">fclose</span>(fp1);
    <span class="hljs-meta">fclose</span>(fp2);
    <span class="hljs-keyword">return</span> 0;
}