文章标题

#include<stdio.h>#include<stdlib.h>#include<time.h>int main(){    FILE *fp=fopen("mail.tex","w");    int num;    printf("输入要生成的邮箱数目个数:");    scanf("%d",&num);    int i=0;    srand((unsigned int)time(NULL));    while(i<num)    {        int j=0;        while(j<8)        {            if(j>5)            {                int d=(int)(9.0*rand()/(RAND_MAX));                fprintf(fp,"%d",d);            }            else            {                char c=97+(int)(24*rand()/(RAND_MAX));                fprintf(fp,"%c",c);            }            j++;        }        fprintf(fp,"%s","@163.com");        fprintf(fp,"\n");        printf("成功写入第%d条记录\n",i+1);        i++;    }    return 0;}

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