1 #include <stdio.h> 2 #include <stdlib.h> 3 4 struct student{ 5 int num; 6 char str[20]; 7 double dec; 8 }; 9 10 int main(){ 11 int n; 12 struct student *stu; 13 14 scanf("%d", &n); 15 stu = (struct student *)malloc(n * sizeof(struct student)); 16 17 for(int i = 0; i < n; ++i){ 18 scanf("%d%s%lf", &stu[i].num, stu[i].str, &stu[i].dec); 19 } 20 21 printf("%d\n", n); 22 for(int i = 0; i < n; ++i){ 23 printf("%d %s %lf\n", stu[i].num, stu[i].str, stu[i].dec); 24 } 25 26 free(stu); 27 return 0; 28 } 29 /* 30 3 31 20 字符串0 20.02 32 21 字符串1 21.12 33 22 字符串2 22.22 34 */