#include "stdafx.h" 
#include <stdio.h>
#include <string.h>
 #include <conio.h> 
#include <stdlib.h>
 
 
#define NO_OF_STUDENTS 4       

struct data {
  char name[20];
  int age;
  int weight;
};
 
int main()
{
  struct data Students[NO_OF_STUDENTS]; // 20 students.
  int Counter = 0;
 
  for (Counter = 0; Counter < NO_OF_STUDENTS; ++Counter) {
    scanf("%s", Students[Counter].name);
    scanf("%d", &Students[Counter].age);
    scanf("%d", &Students[Counter].weight);
  }
 
  


  
  qsort(Students[NO_OF_STUDENTS],4,sizeof(int),compare);

  for (Counter = 0; Counter < NO_OF_STUDENTS; ++Counter) {
    printf("Name=%s, ", Students[Counter].name);
    printf("Age=%d, ", Students[Counter].age);
    printf("Weight=%d\n", Students[Counter].weight);
  }
  




  getch();
 
  return 0;
}





int compare (const void * a, const void * b)
{
  return ( *(int*)a - *(int*)b );
}