Thread: struct question part 2

Before I go on with this program, I'd like to know if what I've done thus far is ok in terms of valid code. Please, if you see something wrong, tell me so that I can fix it.

TIA... formatting doesn't look so good in preview mode... hmm

Code:

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h> 

typedef struct data1
{
  char questions[25][75];	
  char iname[20];
  char ipassw[15]; 
  int num2ask;	
	
} progD;

void newD(progD *temp)
{
    /* 
     * newD()
     *  
     * purpose: to store initial information provided
     *          by the instructor, pw, and the set of
     *          questions to be asked.
     *          
     * status:  Incomplete - struct "data1," output file,
     *                       #defines, pw, entering
     *                       questions as a sep funct
     ********************************************************/
     
    char *n, num[5];
    int start=0;
        
    printf("Please enter your name: ");
    fgets(temp->iname, 20, stdin);    
    
    /* any nasty side effects from doing this? */
    temp->iname[strlen(temp->iname)-1] = '\0';    
    
    printf("\n%s, how many questions will you ask?  (MAX = %d): ", temp->iname, 25);
    fgets(num, sizeof(num), stdin);
    
    num[strlen(num)-1] = '\0';
    
    /* if num is not in the desired range, then output such to correct */ 
    /* working as expected? not all is as it seems.... */
    
    while((temp->num2ask = (int)strtol(num, &n, 10)) > 25 || temp->num2ask < 1)
    {
       	/* some conditions still sneak through :( */
       	 
       	printf("\nSorry %s, %d is not a valid value.\n", temp->iname, temp->num2ask);
       	
       	printf("Please enter a value between 1 and 25: ");
       	fgets(num, sizeof(num), stdin);
    }    
    
    while(start < temp->num2ask) /* get those questions */
    {
    	/* replace test with local var later on */
    	/* real mode dos target, so question length is 80 - "-> " to avoid line wrap */

    	printf("\nYou have %d question(s) remaining\n", (temp->num2ask < 25 ? temp->num2ask-start : 25-start));
    	printf("-> ");                                      /* above will be modifed at some point */
    	
    	fgets(temp->questions[start], 75, stdin);    	
    	temp->questions[start][strlen(temp->questions[start])-1] = '\0';
    	
    	start++;
    }    
}	

int main(void)
{
  int i;
	
  progD user;	
  newD(&user);
	
  i=0;
	
  printf("\n\n%s, you asked the following\n\n", user.iname);
	
  while(i < user.num2ask)
    printf("%s\n", user.questions[i++]);		
	
  return 0;
}

Originally posted by ronin
Before I go on with this program, I'd like to know if what I've done thus far is ok in terms of valid code. Please, if you see something wrong, tell me so that I can fix it.

TIA... formatting doesn't look so good in preview mode... hmm

Didn't find anything glaringly wrong, althought I didn't look extremely close. I did notice one thing though:

Code:

     
    char *n, num[5];
    int start=0;
        
    printf("Please enter your name: ");
    fgets(temp->iname, 20, stdin);    
    
    /* any nasty side effects from doing this? */
    temp->iname[strlen(temp->iname)-1] = '\0';    
/* only if they type in 20 or more characters -- the 20th character will be overwritten.
   Might want to consider increasing the input buffer for safety's sake
    
    printf("\n%s, how many questions will you ask?  (MAX = %d): ", temp->iname, 25);
    fgets(num, sizeof(num), stdin);

Hey WaltP.. thanks for the feedback.

Thanks Salem!!.... your suggestions were exactly what I was hoping for when I decided to free my favorite mod to torment over this stage in the program .

This is a pure dos program, but isn't there some sort of interupt handler to squash ctrl-z? I'd like to implement one later on so that user's can't kill the app that way.

Doh.... I meant ctrl-c

Thanks for the replies Salem... they're appreciated.