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Nov 8th, 2004

generate random question

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hi all...i am a not that much in programming ...

i would ask you how i can generate a multiple choice question chosen randomly from a list of questions with answers using functions in C program ...i know how to generate random numbers only ...

help me please ,,, as soon ,,,

Last edited by ams; Nov 8th, 2004 at 6:48 am. Reason: to complete HW

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ams

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Nov 8th, 2004

Re: generate random question

Create an array of questions and use the random number as an index for the array.

Narue

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Nov 8th, 2004

Re: generate random question

thank u...

but i still don't know how to use array ...i know functions only ....if u can write some of the code ...

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Re: generate random question

>but i still don't know how to use array
So use a series of if statements, do you know how to use those? :rolleyes:

C Syntax (Toggle Plain Text)
int r = rand() % N;
 
if ( r == 0 )
  /* First question */
else if ( r == 1 )
  /* Second question */
...
else if ( r == N - 1 )
  /* Nth question */
int r = rand() % N;

if ( r == 0 )
  /* First question */
else if ( r == 1 )
  /* Second question */
...
else if ( r == N - 1 )
  /* Nth question */

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Nov 9th, 2004

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Re: generate random question

i try these code that i want 2 questions appear randomly from 3 quetions ..but still don't work..

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

int main()
{
int N,counter,i;
int r = rand() % N;

for(i=1;i<=2;i++)
{
if(r==0)
printf("2*2=\na)4 b)2 c)3 d)5\n");
if(getchar()=='a');
counter++;

else if(r==1)
printf("2*5=\na)3 b)10 c)4 d)2\n");
if(getchar()=='b');
counter++;

else if(r==2)
printf("2*9=\na)3 b)10 c)18 d)2\n");
if(getchar()=='c');
counter++;

}
printf("your score is %d\n", counter);

}

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Nov 9th, 2004

Re: generate random question

Call rand every time you want a random number. If you only get one random number then you'll always have the same question. You would think this would be obvious. I guess I just expect too much from other people.

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Nov 10th, 2004

Re: generate random question

I still can't solve it >>>

thank u ...and if u can give more help ...i'd be happy ..i try it ...but i can't generate random questions ....

thank u ...

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Re: generate random question

C Syntax (Toggle Plain Text)
#include <stdio.h>
#include <stdlib.h>
 
int main()
{
  int N = 3,counter,i;
 
  for(i=0;i<10;i++)
  {
    int r = rand() % N;
 
    if(r==0) {
      printf("2*2=\na)4 b)2 c)3 d)5\n");
      if(getchar()=='a')
        counter++;
    }
    else if(r==1) {
      printf("2*5=\na)3 b)10 c)4 d)2\n");
      if(getchar()=='b')
        counter++;
    }
    else if(r==2) {
      printf("2*9=\na)3 b)10 c)18 d)2\n");
      if(getchar()=='c')
        counter++;
    }
    getchar();
  }
  printf("your score is %d\n", counter);
 
  return 0;
}
#include <stdio.h>
#include <stdlib.h>

int main()
{
  int N = 3,counter,i;

  for(i=0;i<10;i++)
  {
    int r = rand() % N;

    if(r==0) {
      printf("2*2=\na)4 b)2 c)3 d)5\n");
      if(getchar()=='a')
        counter++;
    }
    else if(r==1) {
      printf("2*5=\na)3 b)10 c)4 d)2\n");
      if(getchar()=='b')
        counter++;
    }
    else if(r==2) {
      printf("2*9=\na)3 b)10 c)18 d)2\n");
      if(getchar()=='c')
        counter++;
    }
    getchar();
  }
  printf("your score is %d\n", counter);

  return 0;
}

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Re: generate random question

it runs ....

thannnnnnk u very much

and sorry for inconvenience....

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Nov 10th, 2004

Re: generate random question

>and sorry for inconvenience....
No, it's my fault. I didn't look closely enough at the code to see all of your problems. If I had things would have gone much more quickly, and for that I appologize.

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