is there is any library function for saving a program?

[Unregistered]

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

[Okiesmokie]

you could write your own function, example:

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

[GrNxxDaY]

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

[Klinerr1]

yeah it helped a lot if you want quick esponses.

[master5001]

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.

#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:

#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.

[endo]

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

[skipper]

Master5001,

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

[Prelude]

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

>Anyways, see if this helps.

#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:

#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