#include<stdio.h>

struct students_jia{

char name[10];

int birthday;

char phone[15];

};

void sort(struct students_jia s[],int n)

{

int i,j;

struct students_jia temp;

for(i=1;i<n;i++)

for(j=0;j<n-1;j++)

if(s[j].birthday >s[j+1].birthday)

{

temp=s[j];

s[j]=s[j+1];

s[j+1]=temp;

}

}

int main()

{

int i,n;

struct students_jia students[3];

printf("Enter:n");

scanf("%d",&n);

for(i=0;i<n;i++)

scanf("%s%d%s",students[i].name,&students[i]. birthday,students[i].phone);

sort(students,n);

for(i=0;i<n;i++)

printf("%s\n%d\n%s\n",students[i].name,students[i]. birthday,students[i].phone);

return 0;

}

 

#include"stdio.h"

struct student{

int number,record;

char name[20],grade;

}a[10];

char set_grade(int r);

int main()

{

int i;

printf("输入10名学生信息\n学号\t姓名\t成绩\n");

for(i=0;i<10;i++){

scanf("%d%s%d",&a[i].number,a[i].name,&a[i].record);

a[i].grade=set_grade(a[i].record);

}

printf("学号\t姓名\t成绩\t等级\n");

for(i=0;i<10;i++)

printf("%d\t%s\t%d\t%c\n",a[i].number,a[i].name,a[i].record,a[i].grade);

printf("不及格者\n");

for(i=0;i<10;i++)

if(a[i].grade=='D')

printf("%d\t%s\t%d\t%c\n",a[i].number,a[i].name,a[i].record,a[i].grade);

return 0;

}

char set_grade(int r)

{

if(r<=100&&r>=85)

return 'A';

if(r<=84&&r>=70)

return 'B';

if(r<=69&&r>=60)

return 'C';

if(r<=59&&r>=0)

return 'D';

else

return '?';

}