p7.c

  1 #include <stdio.h>
  2
  3 struct person
  4 {
  5         char first_name[20];
  6         char last_name[20];
  7         int age;
  8 };
  9
 10 void print_person_info(struct person clone);
 11 void sort_by_age(int n, struct person a[]);
 12
 13 int main(void)
 14 {
 15
 16         int i, n=5;
 17
 18         struct person student[5] =
 19         {
 20                 {"Bob",         "Smith",        21},
 21                 {"Jimmy",       "John",         18},
 22                 {"Amy",         "Goldberg",     20},
 23                 {"Dan",         "Marlo",        17},
 24                 {"Sally",       "Sorrow",       16}
 25         };
 26
 27         for(i=0; i<n; i++)
 28                 print_person_info(student[i]);
 29
 30         sort_by_age(n, student);
 31
 32         printf("---AFTER SORTING------------\n");
 33
 34         for(i=0; i<n; i++)
 35                 print_person_info(student[i]);
 36
 37         return 0;
 38 }
 39
 40 void print_person_info(struct person clone)
 41 {
 42         printf("Name = %s %s\n", clone.first_name, clone.last_name);
 43         printf("Age = %i\n\n", clone.age);
 44 }
 45
 46
 47 void sort_by_age(int n, struct person a[])
 48 {
 49         int i, j;
 50         struct person temp;
 51
 52         for(i=0; i<n-1; i++)
 53         {
 54                 for(j=i+1; j<n; j++)
 55                 {
 56                         if(a[i].age > a[j].age)
 57                         {
 58                                 temp = a[i];
 59                                 a[i] = a[j];
 60                                 a[j] = temp;
 61                         }
 62                 }
 63         }
 64
 65 }
 66