Write a Program to insert the following contents in a file
named “File1”.
Customer No.   Account Type     Balance
101                     Savings                 2000
102                     Current                5000
103                     Savings                 3000
104                     Current                10000
Append the contents of “File1” in another file “File2”. Also
display the contents of File2 on screen.
CODING:
#include <stdio.h>
#include<conio.h>
void main()
{
 FILE *fp1,*fp2;
 struct file{
  int cno,bal;
  char actype[8];
 }cdetails[4]={
{101,2000,"Savings"},
{102,5000,"Current"},
{103,3000,"Savings"},
{104,10000,"Current"}
 };
 char ch;
 int a;
 clrscr();

 fp1=fopen("file1.txt","w");
 fp2=fopen("file2.txt","a+");

 if((fp1||fp2)==NULL)
 {
printf("\nError in handling file(s).");
getch();
exit();
 }
 fprintf(fp1,"Customer No.\tAccount Type\tBalance\n");
 fprintf(fp2,"Customer No.\tAccount Type\tBalance\n");

 for(a=0;a<4;a++)
 {
fprintf(fp1,"%d\t\t",cdetails[a].cno);
fprintf(fp1,"%s\t\t",cdetails[a].actype);
fprintf(fp1,"%d\n",cdetails[a].bal);
fprintf(fp2,"%d\t\t",cdetails[a].cno);
fprintf(fp2,"%s\t\t",cdetails[a].actype);
fprintf(fp2,"%d\n",cdetails[a].bal);
 }
 printf("\nData copied to file1.txt successfully.");
 printf("\nContents of file1.txt appended to file2.txt successfully.");
 getch();
 clrscr();
 printf("\nContents of file2.txt :\n\n");
 rewind(fp2);

 while(!feof(fp2))
 {
ch=fgetc(fp2);
printf("%c",ch);
 }

 fcloseall();
 getch();

}