今天学文件，练手的...Look
/*
  Name: x_type.c
  Author: x-bit at 167168.kmip.net(纯技术论坛)
  Description: 显示文本文件内容的type命令源代码
               dev-cpp5 + win2k 下调试通过
               转载请保留上述信息的完整性
  Date: 08-11-2004              
  Copyright: x-bit Allrights Reserved.
*/

#include <stdio.h>
void usage(char *msg)
{
    puts(msg);
    puts("usage: command filename1 [filename2]..."); /*可显示多个文件内容*/
    exit(0);
}

void errMsg(char *msg)
{
    puts(msg);
    exit(0);
}
void type(int argc, char *argv[])
{
    int i;
    FILE *fp;
    for(i=2; i<=argc; i++)    /*循环显示多个文件*/
    {
        if(fp=fopen(argv[i-1], "r"))  /*正常打开文件显示其内容*/
        {
            putchar('\n');
            puts(argv[i-1]);
            while(!feof(fp))
                putchar(fgetc(fp));
        }
        else          /*错误信息*/
        {
            putchar('\n');
            puts(argv[i-1]);
            errMsg("can't find the file.");
        }
        fclose(fp);
    }
}

int main(int argc, char *argv[])
{
   
    if(argc==1)
        errMsg("parameter error.");
    else
        type(argc, argv);
       
    return 0;
}