摘要：task 4 #define _CRT_SECURE_NO_WARNINGS #include<stdio.h> int main() { FILE* fp; fp = fopen("D:\\.temp\\data4.txt", "r"); if (feof(fp)) { printf("fail 阅读全文

摘要：task 1 #include <stdio.h> #include <string.h> #define N 3 typedef struct student { int id; char name[20]; char subject[20]; double perf; double mid; d 阅读全文