Even or Odd number in C using function
Even or Odd number in C using function Program Description:
Write a Program to check whether the given number is an Even or Odd number in C using function. The program should accept a number from the user and detect if it is an even number or an odd number.
We can create a function called isEven (or isOdd), Which detects if the given number is an even number or an odd number.
Excepted Input and Output:
Input:
Enter a Number : 30
Output:
30 is a Even Number
Pre-Requisites:
Even or Odd number in C using function Algorithm:
- Take the input from the user and store it in a variable called number
- Create a function called
isEven, Which takes the
number as the input and check if the
numberis Even number.
- The isEven function returns boolean
- If the number is an Even number, The isEven function returns true, Otherwise it will return False.
- Call the isEven function from the main function and pass the number as the input.
- Check the return value of
isEven and print the result accordingly.
- If the return value is true, Then number is an Even Number.
- If the return value is false, Then number is an Odd Number.
- Stop the program.
Program to check Even or Odd Number in C using Function
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/* Program to check Even or Odd number using function */ #include<stdio.h> #include<stdbool.h> /** * @brief Check if the 'number' is even number * * @param number * @return true if 'number' is even * @return false if 'number' is Odd */ bool isEven(int number) { // check if the 'number' is even return ((number % 2) == 0); } int main() { int number; printf("Enter a Number : "); scanf("%d", &number); // call the isEven() function if(isEven(number)) { printf("%d is a Even Number\n", number); } else { printf("%d is an Odd Number\n", number); } return 0; } |
Prototype details of the isEven function.
- <strong>bool</strong> <strong>isEven</strong>(int number)
- function_name : isEven
- arguments_list: int
- return_type : bool
Program Output:
Compile the program.
$ gcc even-odd.c
Run the executable file.
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$ ./a.out Enter a Number : 30 30 is a Even Number $ ./a.out Enter a Number : 15 15 is an Odd Number $ ./a.out Enter a Number : 1000 1000 is a Even Number $ |
As we can see from the above output, We are getting the desired results.
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[…] two variables to track the count of the total number of even numbers and odd numbers. So Initialize the nEven and nOdd variables with […]