Write a C Program to merge contents of two files into a third file.

#include <stdio.h> 
#include <stdlib.h> 
void main() 
{ 
   // Open two files to be merged 
   FILE *fp1 = fopen("file1.txt", "r"); 
   FILE *fp2 = fopen("file2.txt", "r"); 
   // Open file to store the result 
   FILE *fp3 = fopen("file3.txt", "w"); 
   char c; 
   if (fp1 == NULL || fp2 == NULL || fp3 == NULL) 
   { 
         puts("Could not open files"); 
         exit(0); 
   } 
   // Copy contents of first file to file3.txt 
   while ((c = fgetc....

#include  
#include  
void main() 
{ 
   // Open two files to be merged 
   FILE *fp1 = fopen("file1.txt", "r"); 
   FILE *fp2 = fopen("file2.txt", "r"); 
   // Open file to store the result 
   FILE *fp3 = fopen("file3.txt", "w"); 
   char c; 
   if (fp1 == NULL || fp2 == NULL || fp3 == NULL) 
   { 
         puts("Could not open files"); 
         exit(0); 
   } 
   // Copy contents of first file to file3.txt 
   while ((c = fgetc(fp1)) != EOF) 
    {
      fputc(c, fp3); 
     }
   // Copy contents of second file to file3.txt 
   while ((c = fgetc(fp2)) != EOF) 
    {
      fputc(c, fp3); 
    }
   printf("Merged file1.txt and file2.txt into file3.txt"); 
   fclose(fp1); 
   fclose(fp2); 
   fclose(fp3); 
}