Fibonacci series with While loop in R

R Programming: Control Structure Exercise-4 with Solution

Write a R program to print the Fibonacci series using a while loop.

Sample Solution :

R Programming Code :

# Define a function to print the Fibonacci series up to a given limit using a while loop
print_fibonacci_series <- function(limit) {
    # Initialize variables to store the first two numbers of the Fibonacci series
    a <- 0
    b <- 1
    
    # Print the first two numbers of the Fibonacci series
    cat(a, b, sep = " ")
    
    # Iterate while the next Fibonacci number is less than or equal to the limit
    while (b <= limit) {
        # Calculate the next Fibonacci number
        next_num <- a + b
        
        # Print the next Fibonacci number
        cat(" ", next_num)
        
        # Update variables for the next iteration
        a <- b
        b <- next_num
    }
}

# Test the function with a limit of 100
limit <- 100
cat("Fibonacci series up to", limit, "is: ")
print_fibonacci_series(limit)

Output:

Fibonacci series up to 100 is: 0 1  1  2  3  5  8  13  21  34  55  89  144                  

Explatnaion:

In the exercise above,

• Define the function:
• The function "print_fibonacci_series()" takes one parameter 'limit', which specifies the upper limit for the Fibonacci series.
• Initialization:
• Inside the function, variables 'a' and 'b' are initialized to store the first two numbers of the Fibonacci series (0 and 1 respectively).
• Print Initial Numbers:
• The initial two numbers ('a' and 'b') of the Fibonacci series are printed using 'cat'.
• While Loop:
• The while loop iterates as long as the next Fibonacci number (next_num) is less than or equal to the specified limit.
• Calculate the next Fibonacci number:
• Inside the loop, the next Fibonacci number is calculated by adding a and b.
• Print the next Fibonacci number:
• The next Fibonacci number is printed using 'cat'.
• Update variables:
• The variables 'a' and 'b' are updated for the next iteration.
• Testing the function:
• The function is tested with a limit of 100.
• The Fibonacci series up to the specified limit is printed to the console.

R Programming Code Editor:

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