10. C Program to generate n prime numbers and print them in pyramid pattern.

//10. C Program to generate n prime numbers and print them in pyramid pattern.

#include <stdio.h>
#include <conio.h>
void main()
{
    int space, n, prime[100];     //Declare variables.
    int count=0, i=2, j, k=2;
    clrscr();
    printf("Enter nth number:");
    scanf("%d",&n);
    while(i<=n+1)
    {
    for(j=2;j<=k-1;j++)
    {
        if(k%j==0)             //Check whether k is divisible by any other number.
        {
        break;
        }
    }
    if(j==k)
    {
       // printf("%d\n",k);    //For debugging.
        prime[count++]=k;
        i++;
    }
    k++;
    }
    count=0;
    space=n;
    for (i=0;i<=n/2+1;i++)
    {
    for (k=0;k<space;k++)
    {
        printf("   "); //Provide 2 spaces
    }
    for (j=0;j<2*i-1;j++)
    {
        if(count<n)
        printf("%d  ",prime[count++]); //Provide 2 spaces after %d
    }
    space--;
    printf("\n");
    }
    getch();
   
}