一个班有5名学生，学生信息包括姓名，年龄家庭住址等，按姓名升序进行输出



#include<stdio.h>
#include<string.h>
struct user_info
{
 char name[20];
 int age;
 char phone[20];
 char address[80];
};
void main()
{
 int i,j,k;
 struct user_info tmp;
 struct user_info user[5]={{"li",31,"1258764","beijing"},
 {"zhao",39,"5897412","shanghai"},
 {"qian",28,"3654879","chongqing"},
 {"zhou",30,"5632146","hangzhou"},
 {"sun",34,"8532541","shenyang"}
 };
 for(i=1;i<5;i++)
 {
  k=5-i;
  for(j=0;j<5-i;j++)
      if(strcmp(user[j].name,user[k].name)>0)
          k=j;
      if(k!=5-i)
      {
        tmp=user[k];
        user[k]=user[5-i];
        user[5-i]=tmp;
      }
 }
  printf("%20s%5s%15s%20s","name","age","phonge","address");
      printf("\n");
  for(i=0;i<5;i++)
      printf("%20s%5s%15s%20s\n",user[i].name,user[i].age,user[i].phone,user[i].address);