Check if a Number is Odd or Even

Source Code

# Program to check if
# the input number is odd or even.
# A number is even if division
# by 2 give a remainder of 0.
# If remainder is 1, it is odd.

num = as.integer(readline(prompt="Enter a number: "))
if((num %% 2) == 0) {
    print(paste(num,"is Even"))
} else {
    print(paste(num,"is Odd"))
}

Output 1

Enter a number: 89
[1] "89 is Odd"

Output 2

Enter a number: 0
[1] "0 is Even"

In this program, we ask the user for the input and check if the number is odd or even. A number is even if it is perfectly divisible by 2. When the number is divided by 2, we use the remainder operator %% to compute the remainder. If the remainder is not zero, the number is odd.