C Program to merge two file

C Program to merge two file : A simple C program which is helpful to merge two text file.The merging  of two file means to add the contents of first file at the end of second file. Here is source code of the C Program to append the content of file at the end of another. The C program is successfully compiled and run on a Linux system as well as windows system. The program output is also shown below.

C Program to merge two file

#include <stdio.h>
#include <stdlib.h>
 
main()
{
    FILE *fsring1, *fsring2, *ftemp;
char ch, file1[20], file2[20], file3[20];
 
printf("Enter name of first file ");
gets(file1);
printf("Enter name of second file ");
gets(file2);
printf("Enter name to store merged file ");
gets(file3);
    fsring1 = fopen(file1, "r");
    fsring2 = fopen(file2, "r");
if (fsring1 == NULL || fsring2 == NULL)
{
perror("Error has occured");
printf("Press any key to exit...\n");
exit(EXIT_FAILURE);
}
    ftemp = fopen(file3, "w");
if (ftemp == NULL)
{
perror("Error has occures");
printf("Press any key to exit...\n");
exit(EXIT_FAILURE);
}
while ((ch = fgetc(fsring1)) != EOF)
fputc(ch, ftemp);
while ((ch = fgetc(fsring2) ) != EOF)
fputc(ch, ftemp);
printf("Two files merged %s successfully.\n", file3);
fclose(fsring1);
fclose(fsring2);
fclose(ftemp);
return 0;

}

Output

Enter name of first file abc.txt
Enter name of second file bcd.txt
Enter name to store merged file merge.txt
Two files merged merge.txt successfully.