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Random number generation from an array in C programming

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kishore84

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Random number generation from an array in C programming

Feb 2nd, 2009

Hello friends,

Need help in generating a random number from an array.Once a number is generated, the number has to be deleted from the array so that only the remaining numbers can be generated from the array.And it should go on until all the numbers from the array are deleted.

Hope replies asap from you friends.

Last edited by Ancient Dragon; Feb 2nd, 2009 at 10:15 pm. Reason: remove bold tags

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

Which part are you stuck on?

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

I am able to generate a random number from an array but was unable to delete the number that have already appeared once.....I was stuck at this point

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

>but was unable to delete the number that have already appeared once.

http://www.daniweb.com/forums/thread38345.html

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

Show us what code you already have. It might enlighten us on the problem you are encountering.

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

the problem is the erase command may not work in C.Need help in C coding

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kishore84

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
 
int pick()
{
int arr[5]={2,3,4,5,6};
int random;
srand(time(NULL));
random = arr[rand() % 5 ];
return random;
}
 
int main()
{
pick();
int i = 0;
while(i<5)
{
printf("random number from the array %d\n",pick());
}
getch();
}
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>

int pick()
{
int arr[5]={2,3,4,5,6};
int random;
srand(time(NULL));
random = arr[rand() % 5 ];
return random;
}

int main()
{
pick();
int i = 0;
while(i<5)
{
printf("random number from the array %d\n",pick());
}
getch();
}

This is code i have written and stuck up on how to delete the number that have already appeared once

Last edited by Ancient Dragon; Feb 2nd, 2009 at 10:02 pm. Reason: add code tags

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kishore84

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

sorry its the for loop in the place of while loop

for(i=0;i<5;i++) in the place of while(i<5)

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Re: Random number generation from an array in C programming

Feb 2nd, 2009

•

Originally Posted by kishore84

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

int pick()
{
int arr[5]={2,3,4,5,6};
int random;
srand(time(NULL));
random = arr[rand() % 5 ];
return random;
}

int main()
{
pick();
int i = 0;
while(i<5)
{
printf("random number from the array %d\n",pick());
}
getch();
}

This is code i have written and stuck up on how to delete the number that have already appeared once

Not 100% sure what you are trying to do and what you mean by "delete", but this code snippet might be useful:

http://www.daniweb.com/code/snippet1034.html

Also, what "erase" command are you referring to in your earlier post. Here's an "erase" command from the vector library.

http://www.cplusplus.com/reference/s...tor/erase.html

You would have to have a vector rather than an array to use it.

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Re: Random number generation from an array in C programming

#10

Feb 2nd, 2009

Vernondozier thanks for ur valuable info in the first link.Its informative.But the same functinality cannot be implemented in C as we are using namespace in here.Please help me out.

Hope reply from you asap.