第二十四天作业3

#include<stdio.h>#include<stdlib.h> #include<time.h>int main(){srand(time(0));FILE* fp;int i,ran;fp=fopen("D://2.txt","r");char c;for(i=0;fscanf(fp,"%c",&c)!=EOF;++i)fclose(fp);fp=fopen("D://2.txt","r");ran=rand()%i+1; for(i=0;i<ran;++i){fscanf(fp,"%c",&c);//这个C是程序里这一行数据的载体; }printf("第%d行的数据是%c",ran,c);}