尴尬

今天去面试，跟面试官吹了牛逼，面试题没做出来，真的很尴尬。

将随机字符串写入文件，然后都出来，写入另一个文件。

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




int randstr(char *p)
{
    char metchar[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    int i = 0;
    srand(time(NULL));
    for( i = 0; i < 10; i++)
    {
        p[i] = metchar[rand()%62];
    }
    p[10] = '\0';


    return 0;
}




int creatFile(char *p)
{
    char filename[30];
    char buf[1024*50];
    char filestr[11];
    int i = 0;
    memset(filestr,'\0',sizeof(filestr));
    memset(filename,'\0',sizeof(filename));
    memset(buf,'\0',sizeof(buf));
    strcpy(filename,p);
    printf("filename=[%s]\n",filename);
    FILE *fp = fopen("E:\\qt\\filetest\\srcfile.txt","wb");
    if(fp == NULL)
    {
        printf("err...\n");
        return -1;
    }
    fseek(fp,49999,SEEK_END);
    fputc(32,fp);
    fseek(fp,0,SEEK_SET);
    for ( i =0 ; i < 5; i++)
    {


        randstr(filestr);
        printf("filestr=[%s]\n",filestr);
        fwrite(filestr,sizeof(filestr),1,fp);
        fputc('\n',fp);
        memset(filestr,'\0',sizeof(filestr));
        sleep(1);
    }
    fclose(fp);


    return 0;


}


int readwrite()
{
    char buf[12];
    memset(buf,0x0,sizeof(buf));
    FILE * fp1 =  fopen("E:\\qt\\filetest\\srcfile.txt","r");
    FILE * fp2 =  fopen("E:\\qt\\filetest\\a.txt","w");


    while(fgets(buf,sizeof(buf),fp1) != NULL)
    {
        fputs(buf,fp2);
        printf("buf=[%s]\n",buf);
    }


    fclose(fp1);
    fclose(fp2);


    return 0;
}




int main(void)
{


    char buf[30];
    char strbuf[11];
    int ret = 0;
    memset(buf,0x0,sizeof(buf));
    memset(strbuf,'\0',sizeof(strbuf));
    strcpy(buf,"srcfile.txt");


    creatFile(buf);
    readwrite();




    printf("end....\n");


    return 0;
}