Answer :

#include<stdio.h>  //header file contains the function,decleraction and macro defination of key words used in code.

int main ()

{

int num,even=0,odd=0,zero=0,num_1; 

printf("Enter a 4 digit number");

scanf("%d",&num);

while (num>0)  //loop

{

num_1=num%10; // to take a single digit

if (num_1==0)

{

     zero++;

}

else if(num_1%2==0)

{

    even++;

}

else

{

  odd++;

}

num=num/10; // to divide the number and take the another number.

}

printf("even numbers : %d\n",even);

printf("odd numbers : %d\n",odd);

printf("Zeros : %d\n",zero);

}

Output :