is there is any library function for saving a program?

hi.....
i want to know that is there is any library function to save the program output.for example i am writing a program below

#include <stdio.h>
#include <conio.h>
void main (void)
{

char string;
printf ("ENTER STRING");
gets (string);
for (i=0;i <10;i++)
{
printf ("THE STRING IS "%s",string);
}

}

ok then the user will input the string and it will appear as output ten times on the screen i want to ask that can i save that output by any library function or by any other means ? is it possible?


please reply me

you could write your own function, example:

Code:

---

ostream file("output.txt");
//..
void Write(char *string)
{
    file << string;
    cout << string;
}

---

You should maybe re-post this on the C board, not C++.

yeah it helped a lot if you want quick esponses.

You know it pains me to see how many people think cross posting and multiple posting are a good way of getting an answer. When I see two posts with similar titles I usually don't look at them. And I know I'm not alone on that!

Anyways, see if this helps.

Code:

---

#include <stdio.h>
#include <conio.h>
void main (void)
{
    FILE *output = fopen("user_output.log", "a");
    char string;
    printf ("ENTER STRING");
    gets (string);
    for (i=0;i <10;i++)  {
        printf ("THE STRING IS "%s",string);
        fprintf(output, "%s", string);
    }
    fclose(output);
}

---

If this is more what you want you could also do this:

Code:

---

#include <stdio.h>
#include <conio.h>
void main (void)
{
    FILE *output = freopen("user_output.log", "a", stdout);
    char string;
    printf ("ENTER STRING");
    gets (string);
    for (i=0;i <10;i++)  {
        printf ("THE STRING IS "%s",string);
    }
    fclose(output);
}

---

The second one diverts output to the file.

I don't know enough about C functions, I ignore them as soon as I see the code :)

Master5001,

Quote:

---

You know it pains me to see how many people...

---

No, you're not alone at all. I'm afraid that, with the new school year just around the corner, the floodgates may well open on this type of activity.

Patience...lots of patience. :)

-Skipper

Or you could simply use some form of redirection from the command line. :)

>Anyways, see if this helps.

Code:

---

#include <stdio.h>
/* Nonstandard, are you sure you need it? */
#include <conio.h>
/* Flat out wrong, void main is undefined */
void main (void)
{
    /* Where do you test for a successful open? */
    FILE *output = fopen("user_output.log", "a");
    /* The identifier string is reserved for the implementation.
    ** And it should be either string[SIZE] or *string. As it is
    ** string is only one char when you treat it as a string.
    */
    char string;
    printf ("ENTER STRING");
    /* gets is unsafe, it should never be used. string also
    ** wasn't defined as a pointer or array, so this call is
    ** invalid. If string were a pointer then you would need
    ** to allocate memory as well. */
    gets (string);
    /* i hasn't been declared. */
    for (i=0;i <10;i++)  {
        /* You have one too many " in that call to printf. */
        printf ("THE STRING IS "%s",string);
        fprintf(output, "%s", string);
    }
    fclose(output);
}

---

This would be a bit better:

Code:

---

#include <stdio.h>

int main (void)
{
  int i;
  char str[BUFSIZ];
  FILE *output = fopen ( "user_output.log", "a" );

  if ( output != NULL ) {
    printf ( "ENTER STRING: " );
    if ( fgets ( str, sizeof str, stdin ) != NULL ) {
      for ( i = 0; i < 10; i++ )  {
        printf ( "THE STRING IS %s", str );
        fprintf ( output, "%s", str );
      }
      fclose ( output );
    }
  }
  return 0;
}

---

-Prelude