CO4 Assignment Second question solution

There are 100 records present in a file with the following structure:
struct date
{
int d, m, y ;
} ;
struct employee
{
int empcode[6] ;
char empname[20] ;
struct date join_date ;
float salary ;
} ;
Write a program to read these records, arrange them in ascending order of join_date and write them in to a target file.

Solution:

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

main()

{

struct doj

{

int day,mon, year;

};

struct employee

{

int num;

char name[30];

struct doj d;

float salary;

};

struct employee s[100],temp;

int n,i,j,p;

FILE *fp,*fp1;

fp=fopen("emp.txt","a+");

fp1=fopen("target.txt","a+");

printf("\n Enter number of employees");

scanf("%d",&n);

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

{

               printf("\n Enter Number");

               scanf("%d",&s[i].num);

               printf("\n Enter Name");

               scanf("%s",s[i].name);

               printf("\n Enter Date of joining(dd-mm-yy");

               scanf("%d%d%d",&s[i].d.day,&s[i].d.mon,&s[i].d.year);

               printf("enter salary");

               scanf("%f",&s[i].salary);

               fprintf(fp,"%d\t%s\t%d-%d-%d\t %f\n",s[i].num,s[i].name,s[i].d.day,s[i].d.mon,s[i].d.year,s[i].salary);

}

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

{

               for(j=0;j<n-p-1;j++)

               {

                              if(s[j].d.year>s[j+1].d.year||s[j].d.year==s[j+1].d.year&&s[j].d.mon>s[j+1].d.mon||s[j].d.year==s[j+1].d.year&&s[j].d.mon==s[j+1].d.mon&&s[j].d.day>s[j+1].d.day)

                              {

                                             temp=s[j];

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

                                             s[j+1]=temp;

                              }

               }

}

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

fprintf(fp1,"%d\t%s\t%d-%d-%d\t %f\n",s[i].num,s[i].name,s[i].d.day,s[i].d.mon,s[i].d.year,s[i].salary);

fclose(fp);

fclose(fp1);

getch();

}