C语言实例60：随机存取

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
    FILE *fp;

    if(argc != 3)
    {
        printf("缺少字节位置，无法进行操作.\n");
        exit(0);
    }

    if((fp = fopen(argv[1], "rb")) == NULL)
    {
        printf("无法打开文件。\n");
        exit(0);
    }

    if(fseek(fp, atol(argv[2]), 0))
    {
        printf("寻找出现错误.\n");
        exit(0);
    }

    printf("在%ld处的字符是%c.\n",atol(argv[2]), getc(fp));
    fclose(fp);

    system("pause");
    return 0;
}