Thread: Help me with my project

i cant random the question
i have 10 question and only 5 question will appear in one category since that is not complete
i hope anyone can help me to random the question

im only beginner..
here my sample code

Code:

# include <stdio.h>
# include <stdlib.h>
int score;
main()
{
char cat;
clrscr();
printf ("Welcome to Trivia");
getch();
back1:
clrscr();
printf ("\n");
printf ("                              Select Category\n");
printf ("\n");
printf ("\n");
printf ("\n");
printf ("\n");
printf ("    [A] HISTORY\n");
printf ("\n");
printf ("    [B] GENERAL KNOWLEDGE\n");
printf ("\n");
printf ("    [C] ENGLISH\n");
printf ("\n");
printf ("    [D] SCIENCE\n");
printf ("\n");
printf ("    [E] QUIT\n");
printf ("    Enter a category: ");
scanf ("%c",&cat);
switch (cat)
{
case 'A':history();break;
case 'a':history();break;
case 'B':;break;
case 'b':;break;
case 'C':;break;
case 'c':;break;
case 'D':;break;
case 'd':;break;
case 'E':;break;
case 'e':;break;
}
goto back1;
}



history ()
{

char ans;
int  ok=0,clr=0,q;
clrscr();
printf ("\n\n\n                       HISTORY\n");
getch();
back:
clrscr();
clr++;
q=random(1);
printf ("%d",q);
getch();
switch (q)
{
case 0:
if (ok != 1)
{
printf ("\nWho is the first to discover PAPER?\n\n\n");
printf ("[A] India              [C] Egypt\n\n");
printf ("[B] China              [D] none of the above\n");
printf (" Answer: ");
scanf  ("%c",&ans);
switch (ans)
{
case 'B':break;
case 'b':break;
default :break;
}
printf ("%d",clr);
if (clr >= 10)
{
getch();
main();
++ok;
}
else
{
goto back;
++ok;
}
break;
}

case 1:
if (ok != 1)
{
printf ("\nWhat is the first to discover PAPER?\n\n\n");
printf ("[A] India              [C] Egypt\n\n");
printf ("[B] China              [D] none of the above\n");
printf (" Answer: ");
scanf  ("%c",&ans);
switch (ans)
{
case 'B':break;
case 'b':break;
default :break;
}
printf ("%d",clr);
if (clr >= 10)
{
getch();
main();
++ok;
}
else
{
goto back;
++ok;
}
}
break;
}


}




thanks for help..

* you can have the 10 questions in an array of strings.
* Then using rand() function or your own random algorithm you can generate any random numbers.
* Then you can use that random number as an index to get the questions from that array.

can you give some example anyway thanks for answering my help

This is just a sample code. I hope this will help you.

Code:

#include<stdio.h>
int main()
{
        char *q[]={ "c", "c++", "java" };
        srand(time()); // It will set the seed as epoch second
        printf("%s\n",q[rand()%3]); // get the index value within 3 and print that string
        return 0;
}

^ i cant do it can u help me in coding in case random
which if i press the answer then another question will follow
or check my code
i got some error on that thanks.

Originally Posted by rogster001

first, learn some indentation so you can post your queries in a nice way for people to read.

you need to put a loop in to have the program ask you the questions more than once, you can use a for loop, or a while loop for example.

this is a way of getting a random number that you can then test in your switch or whatever >

Code:

//remember to include a header like time.h with a random number function in it

const int QMAX = 3; //this so that you can set the max number of questions to choose from

int main()
{
    int qnum = 0;
    int count = 0;
    
    srand(time(NULL)); //always leave this outside of any loop and 
                       //only use once in the program, usually at the beginning like here for example.
    
    for(count = 0; count < 10; count++) //loop ten times
    {
        qnum = rand() % QMAX;          //choose a random number 0, 1 or 2
        printf("question number = %d\n", qnum);
    }
    printf("\n");
    
return 0;

}

now if you think about it you can put more stuff inside the loop, so it asks questions each time etc etc.
before the loop starts you can do your first display, the title and categories etc,...

get rid of the goto part that you had before.

thanks it really helpful
btw how about if the number is use the number will not appear

for example
the q1 is now answered then
on the next question the q1 will not appear anymore aside in use again the category

sorry for my english

Have another array of type int parallel to your questions array. Have this array initially initialized to 0. When a question is answered, mark the integer at the index of the question in the int array as 1. Then, when you choose questions never choose a question that has its status set to 1 in the int array.

can u give some example of that sorry im noob only here..

Well let's say that you have:

Code:

char *q[] = {"question1","question2","question3"};
/*declare a parallel array of integers */
int status[3] = {0,0,0};

Now whenever you select one of the questions say question i (where 1 <= i <= 3) you:
check if status[i] == 1 (if so that means this question was used before so skip it)
else use question and set status[i] = 1; (to mark this question as used for when you check the next time)

i can't get it..

What have you tried so far? Show us your code.

i already do it thanks how about if i use the case how i will put the if statement to dont repeat it again

anyone know how about the case statement will not repeat when the case is used