{"id":733,"date":"2024-10-19T13:39:54","date_gmt":"2024-10-19T08:09:54","guid":{"rendered":"https:\/\/codexplained.in\/?p=733"},"modified":"2025-11-24T15:36:22","modified_gmt":"2025-11-24T10:06:22","slug":"check-even-or-odd","status":"publish","type":"post","link":"https:\/\/codexplained.in\/?p=733","title":{"rendered":"Check Even or Odd"},"content":{"rendered":"
\n#include <stdio.h>\n\nint main() \n{\n    \/\/ Declare an integer variable to hold the user input\n    int number;\n\n    \/\/ Prompt the user to enter a number\n    printf("Enter an integer: ");\n    scanf("%d", &number);\n\n    \/\/ Check if the number is even or odd\n    if (number % 2 == 0) {\n        \/\/ If the remainder when divided by 2 is 0, it's even\n        printf("%d is an even number.\\n", number);\n    } else {\n        \/\/ If the remainder is not 0, it's odd\n        printf("%d is an odd number.\\n", number);\n    }\n\n    return 0; \/\/ End of the program\n}\n\n<\/pre><\/div>\n\n\n
Explanation:<\/h3>\n\n\n\n
    \n
  1. Including the standard input-output library<\/strong>: We include the stdio.h<\/code> header file, which allows us to use functions like printf<\/code> and scanf<\/code> for input and output.cCopy code#include <stdio.h><\/code><\/li>\n\n\n\n
  2. Main Function<\/strong>: Every C program starts execution from the main()<\/code> function. Inside this function, we\u2019ll write our code logic.cCopy codeint main() { ... }<\/code><\/li>\n\n\n\n
  3. Declaring a variable<\/strong>: We declare an integer variable number<\/code> to store the number that the user will input.cCopy codeint number;<\/code><\/li>\n\n\n\n
  4. User Input<\/strong>: We prompt the user to enter a number using the printf<\/code> function. Then, we use scanf<\/code> to capture the input and store it in the variable number<\/code>.cCopy codeprintf(\"Enter an integer: \"); scanf(\"%d\", &number);<\/code><\/li>\n\n\n\n
  5. Checking if the number is even or odd<\/strong>:
    • We use the modulus operator (%<\/code>) to check whether the remainder of the number divided by 2 is zero.<\/li>
    • If the remainder is 0<\/code>, it means the number is even, so the program prints that the number is even.<\/li>
    • If the remainder is not 0<\/code>, the number is odd, and the program prints that the number is odd.<\/li><\/ul>cCopy codeif (number % 2 == 0) { printf(\"%d is even.\\n\", number); } else { printf(\"%d is odd.\\n\", number); }<\/code><\/li>\n\n\n\n
    • Returning 0<\/strong>: Finally, the program returns 0<\/code> to indicate that it executed successfully.cCopy codereturn 0;<\/code><\/li>\n<\/ol>\n\n\n\n
      OUTPUT<\/h2>\n\n\n\n
      Enter an integer: 8
      8 is even.<\/p>\n\n\n\n
      Summary:<\/h3>\n\n\n\n
        \n
      • The %<\/code> operator helps us check if a number is divisible by 2.<\/li>\n\n\n\n
      • The program handles both even and odd numbers by displaying a message accordingly.<\/li>\n<\/ul>\n