C Program arrange zeros to right side and ones left side in arrays

C Program arrange zeros to right side and ones left side in arrays

#include<stdio.h>

#include<stdlib.h>

main()

{

 int i,size,j,zerosCount=0;

 printf("Enter Size of Array\n");

 scanf("%d",&size);

 int a[size];

 printf("Enter 1's and 0's only\n");

 for(i=0;i<size;i++)

 {

  scanf("%d",&a[i]);

  if(!(a[i]==0 || a[i]==1))

  {

   printf("Please Enter either 0 or 1\n");

   exit(0);

  }

 }

 for(i=0;i<size;i++)

 {

  if(a[i]==0)

  {

   zerosCount++;

  }

 }

 for(i=0;i<size;i++)

 {

  if(i>=zerosCount)

      a[i]=0;

  else

      a[i]=1;

 }

 for(i=0;i<size;i++)

 {

  printf("%d",a[i]);

 }

 printf("\n");

}

Output:-

Enter Size of Array

10

Enter 1's and 0's only

0

1

1

1

0

1

0

1

1

0

1111000000