C program to append data into a file

In this program we will learn How to append data into a file.

EX: Write a C program to append data into a file, How to write a C program to append contents into a file. C program to append data into a file.

  C Program to append data into a file:

#include<stdio.h>
#include<string.h>

int main()
{
    FILE *fptr;
    char str[100];

    //Open file in append mode
    fptr = fopen("file.txt","a");
    
    //Input data to append
    printf("Enter data to append:\n");
    gets(str);
    
    //Append data to a file
    fputs(str,fptr);

    printf("Your data appended in file successfully :) ");
    fclose(fptr);

    return 0;
}

File Contents before appending:

Output after appending data into the file:

Learn more: file handling examples...