# Find product of vector elements in R

• Last Updated : 26 Mar, 2021

In this article, we will see how to find the product of vector elements in R programming language.

### Method 1: Using iteration

Approach

• Create dataframe
• Iterate through the vector
• Multiply elements as we go
• Display product

The following code snippet indicates the application of for loop over decimal point vector. The product obtained is also of the decimal type.

Example:

## R

 # declaring a floating point vector vec <- c(1.1,2,3.2,4)size = length(vec)  # initializing product as 1prod = 1  # looping over the vector elementsfor(i in 1:size) {  # multiplying the vector element at ith index   # with the product till now  prod = vec[i]*prod }print("Product of vector elements:")  # in-built application of prod functionprint(prod)

Output

[1] “Product of vector elements:”

[1] 28.16

The other example demonstrates the behavior of any mathematical operation on a missing, that is NA value. The product returned is NA, in such a case.

Example 2:

## R

 # declaring a floating point vector vec <- c(1.1,2,NA,11,4)size = length(vec)  # initializing product as 1prod = 1  # looping over the vector elementsfor(i in 1:size) {  # multiplying the vector element at  # ith index with the product till now  prod = vec[i]*prod  cat("Product after iteration:")   print(prod) }print("Final product of vector elements:")  # in-built application of prod functionprint(prod)

Output

Product after iteration:[1] 1.1

Product after iteration:[1] 2.2

Product after iteration:[1] NA

Product after iteration:[1] NA

Product after iteration:[1] NA

[1] “Final product of vector elements:”

[1] NA

### Method 2: Using prod()

prod() function in R is an in-built method which can directly compute the multiplicative product of the individual elements in the vector which are specified as its arguments. In case, a single argument is present, it computes the multiplicative output of the individual elements of the vector.

Syntax:

prod(vector)

Example:

## R

 # declaring a integer vector vec <- c(1,2,3,4)print("Product of vector elements:")  # in-built application of prod functionprint(prod(vec))

Output

[1] “Product of vector elements:”

[1] 24

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