cannot run it in a loop :(

**vivek_kumbhar** · 11-03-2002

pls help me make this thing run in a loop..

Code:

#include <stdio.h>

int main (void)
{
	char name[BUFSIZ] = {30};
	int age;
	char ans = 'y';
	FILE *pFile;
	pFile = fopen ("c:\\test\\myfile_c++.txt","at");
	
	if (pFile!=NULL)
	{
		do
		{ 
			printf ("Enter your name : ");
			gets (name);
			printf ("Enter your age : ");
			scanf ("%i",&age);
			fprintf (pFile,"%s %d\n",name,age);
			fclose (pFile);
			printf ("Do you want to continue : ");
			scanf ("%c", ans);
		}
		while (ans != 'n');
	}
	return 0;
}

**shaik786** · 11-03-2002

1.) Don't fclose() the file here, instead, just before the statement: 'return 0;'. That's because, if the loop continued for the second time or more, the file pointer pFile would be pointing to some invalid location for it's transaction, since you have already closed the file.
2.) >scanf ("%c", ans);
You need to pass &ans as the parameter instead.

**vivek_kumbhar** · 11-03-2002

thanx salem.. that was great help..

can we make it running in a window, my goal is to make user enter his entries through a window.. using window() ..

that was the reason y i was using
char name[BUFSIZ] = {30};
and cgets in my earlier programs..

**vivek_kumbhar** · 11-03-2002

aaye.. i suppose i m cheating .. but atlast i got this thing working.. and the user will now make entries in window and confirmation will be made to continue or exit.. all those entries will be stored in a file..

thanx everybody helping me make this code work.. thanx a lot..

any suggestions or available changes will be highly appreciated

Code:

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

	int main(void) 
	{
    char buff[BUFSIZ];  /* general input buffer */
    char name[BUFSIZ] = {30};
    int age;
    char ans;

    FILE *pFile;
    char *p, *q;
    pFile = fopen( "c:\\test\\myfile.txt","at" );
    
    clrscr();
    if(pFile!=NULL)
    
     {
        do{
            window(10,8,60,9);
            /* read the name */
            /* the last statement removes the newline (if present) which */
            /* fgets() will add ( gets() doesn't add a newline ) */
            
            cprintf( "Enter your name : " );
            p = cgets(name);

            cprintf( "\r\nEnter your age : " );
            fgets( buff, sizeof(buff), stdin );
            sscanf( buff, "%i", &age );

            fprintf( pFile,"%s %d\n",p,age );
            cprintf("\r\n \r\n");
            cprintf( " Do you want to make another entry\r\n" );
            cprintf( "   'y' to continue, 'n' to exit     : ");
            fgets( buff, sizeof(buff), stdin );
            ans = buff[0];
            clrscr();
        }
        while ( ans != 'n');
        fclose( pFile );
    }
    return 0;
}

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cannot run it in a loop :(

done at last..

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