fseek的疑问

lance616

怎么样染文件指针后退不行
#include<stdio.h>
main()
{
    FILE *p = fopen("c:\\1.txt","r");
    char cTemp;

    printf("%ld\n",ftell(p));

    cTemp = fgetc(p);
    printf("%ld\t",ftell(p));
    printf("%c\n",cTemp);

    cTemp = fgetc(p);
    printf("%ld\t",ftell(p));
    printf("%c\n",cTemp);

    fseek(p,SEEK_CUR,-1L);
     printf("%ld\n",ftell(p));

    while((cTemp=fgetc(p)) != EOF)
    {
        printf("%ld\t",ftell(p));
        printf("%c\n",cTemp);
    }
    getch();
}

64081874

fseek(p,位移量,起始点);你把参数搞反了