C programing : File

/* Program to take lines 1,4,7,10.... from a text file and to write into a new file. It is written in c with platform devcpp*/

/*
eg:- input file -> ab.txt contain
1 lady gaga
sdrgrg
ergerg
2 oraph winfrey
dfgdr
dfgdf
.
output file neww.txt
1 lady gaga
2 oraph winfrey
.
.
*/
#include
#include
#include



using namespace std;



main()



{



char c;



FILE *fp1,*fp2;
if(fp1=fopen("e:\\ab.txt","r"))
{
cout<<"\n opened fp1";
}
else
{
cout<<"\n failed fp1";
}
if( fp2=fopen("e:\\neww.txt","w") )
{
cout<<"\n opened fp2";
}
else
{
cout<<"\n failed fp2";
}
while(!feof(fp1))
{
c=getc(fp1);
while(c!='\n')
{
putc(c,fp2);
c=getc(fp1);
}
putc('\n',fp2);
c=getc(fp1);
while(c!='\n')
{
c=getc(fp1);
}
c=getc(fp1);
while(c!='\n')
{
c=getc(fp1);
}
}
cout<<"\n End";
getch();
return 0;
}