Q: How can you store whitespace in a string?

Hi all, me again,

I want to know how you can store whitespace in a string?

e.g.: "what a beautiful day"

my code doesn't seem to work..

Code:

	  puts("Add a new question.");
	  puts("Press [ENTER] at a new line when you are done.");
	  while (count < MAXX && gets(libry[count].question) != NULL && libry[count].question[0] != '\0')
	  {
			puts("Type the first answer.");
			scanf("%s", libry[count].answ);
			puts("Type the second answer.");
			scanf("%s", libry[count].answ1);
			puts("Give the right answer (A or B)");
			scanf("%s", libry[count++].choice);
			while (getchar() != '\n') 
				 continue; 
			if (count < MAXX)
				 puts("Type your next question.");
	  }

why would you want to store the phyical "whitespace" or do you want to know the amount of whitespace and hold the value in an array/pointer?

i would like to store the whitespace because i want to add a question for a quiz game, like,

"What is soccer?"

and do the same for the answers, then i would like to write it to a file, line per line, like this;

What is soccer?;A game;A car;A

I dont have time to code it out but make everything a string and store it in an array is the ghist of the idea.

try %[^\n] instead of %s

scanf("%s", char_array_name);
stores the characters from stdin into char_array_name until white space is encountered.

scanf("%[^\n]", char_array_name);
stores the characters from stdin into char_array_name until newline is encountered.

Originally Posted by peterchen

try %[^\n] instead of %s

scanf("%s", char_array_name);
stores the characters from stdin into char_array_name until white space is encountered.

scanf("%[^\n]", char_array_name);
stores the characters from stdin into char_array_name until newline is encountered.

This also doesn't seem to work, still the same problem.

Here's my entire code.

Code:

struct vragen {   /* setup vraag structure   */
	 char vraag[MAXVRAAG];
	 char   antw[MAXANTW];
	 char  antw1[MAXANTW];
	 char        keuze[2];
};

Code:

void addvraag()
{	  
      struct vragen libry[MAXX]; /* array van structures > vragen.libry >> libry.vraag */
	  int count = 0;
	  int index, filecount;
	  int size = sizeof (struct vragen);
      int welk;
      
      
       FILE * vragen;
      filecount = count;
      
	  if ((vragen = fopen("vragen.txt", "a+")) == NULL)
	  {
			fputs("Kan vragen.txt niet openen!\n",stderr);
			exit(1);
	  }
	  rewind(vragen);


	  if (count == MAXX)
	  {
			fputs("Het bestand met vragen is vol!", stderr); /* max v define */
			exit(2);
	  }
	  puts("Voeg nieuwe vraag toe.");
	  puts("Druk [enter] bij een nieuwe lijn als je alle vragen hebt toegevoegd.");
	  while (count < MAXX && gets(libry[count].vraag) != NULL && libry[count].vraag[0] != '\0')
	  {
			puts("Typ het eerste antwoord.");
			scanf("%[^\n]", libry[count].antw);
			puts("Typ het tweede antwoord.");
			scanf("%[^\n]", libry[count].antw1);
			puts("Geef het juiste antwoord (A of B)");
			scanf("%[^\n]", libry[count++].keuze);
			while (getchar() != '\n') /* kijken naar ENTER */
				 continue; /* vrijmaken input line  */
			if (count < MAXX)
				 puts("Typ uw volgende vraag.");
	  }
	  

	  for (index = 0; index < count; index++)
      {
			printf("Vraag: %s \n [A] %s \n [B] %s \n [JUISTE ANTWOORD]: %s\n",libry[index].vraag,libry[index].antw, libry[index].antw1, libry[index].keuze);
            
      }    
            
	  fwrite(&libry[filecount], size, count - filecount, vragen);
	  fclose(vragen);
	  

}

1. don't use gets - use fgets http://faq.cprogramming.com/cgi-bin/...&id=1043284351
2. if you want to save strings as text separated by ; use fprintf, not fwrite
3. scanf("%[^\n]", libry[count].antw);
use fgets instead and remove the \n from the end as described in FAQ

sorry about that.

try fgets(char_array, max_number_char, sdtin)

as vart pointed out.

or put

Code:

getchar();

which removes '\n' from stdin

before every scanf();