#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
int main()
{
    FILE *fp;
    char words[81];
    long count,last;
    char ch;
    puts("Enter the name of file to be processed:");
    gets(words);
    //读取文件
    if((fp=fopen(words,"rb"))==NULL)//只读和二进制模式
        //if((fp=fopen("d:\vital","rb"))==NULL)
    {
        printf("I couldn't open the file \"%s\"\n",words);
        exit(1);
    }
    fseek(fp,0L,SEEK_END);//定位文件末尾
    last=ftell(fp);
    for(count=1L;count<=last;count++)
    {
        fseek(fp,-count,SEEK_END);//回退
        ch=getc(fp);
    }
    putchar('\n');
    fclose(fp);
    getch();
    return 0;
}
   

第二个路径用双斜线，或是单反斜线