Write a C program for finding whether a given number is even or odd.

Here is a simple C program to determine whether a given number is even or odd:

#include <stdio.h>

int main() {
    int number;

    // Prompt user for input
    printf("Enter an integer: ");
    scanf("%d", &number);

    // Check if the number is even or odd
    if (number % 2 == 0) {
        printf("%d is even.\n", number);
    } else {
        printf("%d is odd.\n", number);
    }

    return 0;
}

Explanation:

1. Include Standard Library: #include <stdio.h> is used to include the standard input-output library.
2. Declare Variable: An integer variable number is declared to store the user input.
3. Prompt and Read Input: The program prompts the user to enter an integer and reads it using scanf.
4. Check Even or Odd: The if statement checks if the number is even (number % 2 == 0). If true, it prints that the number is even. Otherwise, it prints that the number is odd.
5. Return Statement: The program ends with return 0;, indicating successful execution.

This concise program efficiently determines the parity of a given integer.