A C Program To Write 5 Elements To a File

To write a block of data into a file , the syntax is
                            fwrite(ptr , m , n , fp)
Where ptr is an address of array or structure to be written into the file , m is the size of the array , n is the number of structures or arrays to be written and fp is the file pointer.

Following program demonstrate how to write an array onto a file.

1. #include<stdio.h>
2. #include<conio.h>
3. void main()
4. {
5.     FILE *fp;
6.     int a[5],i;
7.     clrscr();
8.     if((fp=fopen("text1.dat","wb"))==NULL)
9.     {
10.         printf("\n Cannot open file");
11.         exit(1);
12.     }
13.     printf("\n Enter five numbers");
14.     for(i=0;i<5;i++)
15.        scanf("%d",&a[i]);
16.     fwrite(a,sizeof(a),1,fp);
17.     fclose(fp);
18. }
19.      

Tags: C programming examples , Programs on file handling in C , Programming exercise on file in C , How to write an array into the file in C , How to write a structure into the file in C