Question

Using R Programming language write a program to Check Prime Number (entered by the user) using control statements. Note: a prime number is an integer number greater than 1 whose only factors are 1 and itself. For example: 2, 3, 5, 7, 11, 13, 17.19 etc.

USING R PROGRAMMING

Answer 1

Here is the complete R code for the given task. I have added comments for a better understanding of the code.

# Prompt the user for input:
pmpt = "Please enter a number to check if it is prime:"
number = as.integer(readline(prompt=pmpt))
isPrime = 0
if(number > 1) {
isPrime = 1
for(i in 2:(number-1)) {
# if there is a factor then the number is not prime
if ((number %% i) == 0) {
isPrime = 0
break
}
}
}
# if the number is 2
if(number == 2) isPrime = 1
if(isPrime == 1) {
# The number is a prime number
print(paste(number ,"is prime!"))
} else {
# The number is not a prime number
print(paste(number,"is not prime!"))
}

Screenshot of the code:

Sample Output:

Input: 5

Output:

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