Merge Files | File handling

Exercise 6. WAP to merge contents of two files into another file. 1

#include<stdio.h>
int main()
{
    FILE *fp1, *fp2, *fp3;
    int line, n=1;
    char text[80];
    fp1=fopen("file1.txt","r");
    fp2=fopen("file2.txt","r");
    fp3=fopen("merge.txt","w");
    if (!fp1 || !fp2) //check if file exists
    {   
        printf("File not found!");
        return 0; //terminates the program
    }
    do{
        fgets(text,80,fp1); //read line from file
        fputs(text,fp3); //write line in file
    }while(!feof(fp1));
    fputs("\n",fp3);
    do{
        fgets(text,80,fp2); //read line from file
        fputs(text,fp3); //write line in file
    }while(!feof(fp2));
    fclose(fp1);
    fclose(fp2);
    fclose(fp3);
    return 0;
}

first line
second line
third line

third line
forth line

first line
second line
third line
third line
forth line