Sum of Even numbers using For loop in R

R Programming: Control Structure Exercise-3 with Solution

Write a R program function to find the sum of all even numbers between two given numbers using a for loop.

Sample Solution :

R Programming Code :

# Define a function to find the sum of even numbers between two given numbers
sum_of_even_numbers <- function(start_num, end_num) {
    # Initialize a variable to store the sum
    sum <- 0
    
    # Iterate through the range of numbers from start_num to end_num
    for (i in start_num:end_num) {
        # Check if the current number is even
        if (i %% 2 == 0) {
            # If the number is even, add it to the sum
            sum <- sum + i
        }
    }
    
    # Return the sum of even numbers
    return(sum)
}

# Test the function with example inputs
start_num <- 1
end_num <- 10
result <- sum_of_even_numbers(start_num, end_num)

# Print the result
cat("The sum of even numbers between", start_num, "and", end_num, "is", result, "\n")

Output:

The sum of even numbers between 1 and 10 is 30                  

Explatnaion:

In the exercise above,

• Define the function:
• The function "sum_of_even_numbers()" takes two parameters: 'start_num' and 'end_num', representing the range of numbers between which the sum of even numbers is to be calculated.
• Initialization:
• Inside the function, a variable 'sum' is initialized to store the sum of even numbers, initially set to 0.
• For Loop:
• A for loop iterates through each number in the range from 'start_num' to 'end_num'.
• For each number in the range, the loop checks if it is even using the modulus operator %. If the remainder when divided by 2 is 0, it indicates that the number is even.
• Summation:
• If the current number is even, it is added to the 'sum'.
• Return Result:
• Once all numbers in the range have been processed, the function returns the calculated sum of even numbers.
• Testing the Function:
• The function is tested with example inputs, where 'start_num' is set to 1 and 'end_num' is set to 10.
• The result of the function call is stored in the variable result.
• Finally, the result is printed to the console using "cat".

R Programming Code Editor:

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