Program to store and read data stored in a data file using fprintf() and fscanf() function

using codeblocks
-------------------------------------------------------------------------------------------------
//using fprintf() to store data(one integer) and fscanf()() to read (one integer)that data from an opened //file
#include <stdio.h>
#include<stdlib.h>                       // header file for system("cls")
#include<conio.h>
int main()

{

    FILE *p;                               //pointer declaration
    char ch;
    int i;
    system("cls");                         //clears the screen/console
    p=fopen("data1.txt","w");               //file opening in write mode
    printf("first we store/write data in an opened file\n");
    for(i=0;i<=40;i++)             //executes the loop
    {
       fprintf(p,"%d\n",i);                        // write the entered integer in that file
    }
    fclose(p);                              //closes the file
    getch();
    printf("data/numbers stored successfully!!!\n");
    printf("now we are going to read that stored data\n");
    p=fopen("data1.txt","r");               // openes the file in read only mode
    while((fscanf(p,"%d",&i))!=EOF)    //read an integer using fscanf() from opened file util it ends.
    {

        printf("%d,",i);                //prints that integer on screen
    }
    fclose(p);                            //closes the file
    return 0;
}
//note: The second part (reading file), we can include in
//different file rather in same file as written here.
// But we have to know its data file name.
//i mean to say, the code would be :

/*
#include <stdio.h>
int main()
{
    FILE *p;                               //pointer declaration
    char ch;
p=fopen("data1.txt","r");               // openes the file in read only mode
    while((fscanf(p,"%d",&i))!=EOF)             //read an  integer using getw from opened file.
    {

        printf("%d,",i);                //prints that integer on screen
    }
    fclose(p);                            //closes the file
    return 0;
}
*/

--------------------------------------------------------------------------------

using turboc++

------------------------------------------------------------------

//using fprintf() to store data(one integer) and fscanf()() to read (one integer)that data from an opened //file

#include <stdio.h>

#include<stdlib.h>                       // header file for system("cls")

#include<conio.h>

int main()

{

    FILE *p;                               //pointer declaration

    char ch;

    int i;

    system("cls");                         //clears the screen/console

    p=fopen("data1.txt","w");               //file opening in write mode

    printf("first we store/write data in an opened file\n");

    for(i=0;i<=40;i++)             //executes the loop

    {

       fprintf(p,"%d\n",i);                        // write the entered integer in that file

        

    }

    fclose(p);                              //closes the file

    getch();

    printf("data/numbers stored successfully!!!\n");

    printf("now we are going to read that stored data\n");

    p=fopen("data1.txt","r");               // openes the file in read only mode

    while((fscanf(p,"%d",&i))!=EOF)    //read an integer using getw from opened file.

    {

        printf("%d,",i);                //prints that integer on screen

    }

    fclose(p);                            //closes the file

    return 0;

}

//note: The second part (reading file), we can include in

//different file rather in same file as written here.

// But we have to know its data file name.

//i mean to say, the code would be :

/*

#include <stdio.h>

int main()

{

    FILE *p;                               //pointer declaration

    char ch;

p=fopen("data1.txt","r");               // openes the file in read only mode

    while((i=getw(p))!=EOF)              //read an  integer using getw from opened file.

    {

        printf("%d,",i);                //prints that integer on screen

    }

    fclose(p);                            //closes the file

    return 0;

}

*/