CODEWITHSUNDEEP
ccoin-flipping
Hopelessdecoy
Hopelessdecoy

Reputation: 129

coin flip program problems, C programming

This is my program for making a coin flip simulator, this is for school so I have to use my own code. But I need help the idea is to multiply the variable coin by 3.3 and then rounding off the decimals checking if its odd or even and associating that with heads or tails but I keep getting this error:

(Error 2 error LNK1104: cannot open file 'gdi32.lib' F:\HopelessArts\UTILITIES\coinFlip\coinFlip\LINK coinFlip)

I have no Idea what this means... here is my syntax:

#include <stdio.h>
int main(void) {
  //coin flip program 100x should be 50/50 heads tails

  int coin;
  int heads;
  int tails;
  int counter;

  coin = 3;
  heads = 0;
  tails = 0;

  for (counter = 0; counter < 100; counter++) {

    coin = coin * 3.3;

    if (coin % 2 == 0) {
      heads++;
    } else {
      tails++;
    }

    printf("Heads, tails %d%d", heads, tails);
  }

}

Upvotes: 0

Views: 15281

Answers (3)

Can_of_awe
Can_of_awe

Reputation: 1556

There are many good suggestions above about improving the randomness of your generator, although it seems you have forgotten to specify the return value of the main() function. Add in:

return 0;

just before the last brace, and remove the "void" parameter for main().

Upvotes: 0

Hopelessdecoy
Hopelessdecoy

Reputation: 129

Hey all I fixed the library issue by installing(or re installing unsure) the windows sdk and I fixed my code using the rand function like this:

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

int main() {
//coin flip program 100x should be about 50/50 heads tails

int coin;
int heads;
int tails;
int counter;

heads = 0;
tails = 0;

for (counter = 0; counter < 100; counter++){

coin = rand();

 if (coin%2 == 0 ){
     heads++;
 }
 else{
     tails++;
 }

printf("%d,%d  ", heads, tails);
}
printf("listed heads first then tails.");
system("pause");
}

Thanks for all the input! I will research all of your answers though to become a better programmer!

Upvotes: 1

ThisaruG
ThisaruG

Reputation: 3412

You can't assign a float or double value to an int variable as you've done

coin = coin * 3.3;

Try to change int coin; to double coin;

Upvotes: 0

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