Fill array allocated by user with logical order prime numbers

Question

208/5000
Write a program that will fill prime numbers starting with the first prime number within a given range in an array?
* Number is a prime if it is is divisible only by 1 and itself.
* Size of array is user-defined.
* User defines number of elemenets in array.(needs to be dinamicly allocated)
* Print created array necessary at the end.

Answer 1

Following should solve your problem

#include <stdio.h>

int main(void)
{
 int *myarray;
 int sizeofarray;
 int count=0;

 printf("Enter the size of array(example: 5000)\n");
 scanf("%d", &sizeofarray);

 myarray=calloc(sizeofarray, sizeof(int));

 for (int i=208; i<=5000; i++)
 {
  for (int j=2; j<=i; j++) 
  {
    if (i == j)
    {
      myarray[count++] = i;
      printf("%d\n",i);
    }
    else if (i%j == 0)
      break;
  }
 }
}