Write a C program that inputs a series of integers and passes them one at a time to function even which uses the modulus operator to determine whether an integer is even.The function should take an integer argument and re

Sure, here's an example C program that takes a series of integers as input and passes them to a function called `even` that checks whether each integer is even or odd:

#include <stdio.h>

int even(int num) {
  if (num % 2 == 0) {
    return 1;
  }
  else {
    return 0;
  }
}

int main() {
  int num, result;
  
  printf("Enter a series of integers (enter -1 to end):\n");
  
  do {
    scanf("%d", &num);
    
    if (num != -1) {
      result = even(num);
      
      if (result == 1) {
        printf("%d is even\n", num);
      }
      else {
        printf("%d is odd\n", num);
      }
    }
  } while (num != -1);
  
  return 0;
}

In this program, we use a `do-while` loop to repeatedly prompt the user for input until they enter `-1`. Each integer entered by the user is passed to the `even` function, which uses the modulus operator (`%`) to determine whether the integer is even or odd. If the result is 0, the integer is odd; if the result is 1, the integer is even. The function returns either 1 or 0 depending on whether the integer is even or odd.

In the `main` function, we call `even` for each integer entered by the user and print a message indicating whether the integer is even or odd.