R Program to access the first value in a given vector

How to access the first value in a given vector

Here we are explaining how to write an R program to access the first value in a given vector. Here we are using a built-in function head() for this finding. The head() function helps to returns the first n rows of the dataset. The syntax of this method is like 

head(x,n=number) #where x is the input dataset/dataframe and n is the number of rows that the function should display.
 

How to access the first value in a given vector in R program

Below are the steps used in the R program to get the first value in a given vector. In this R program, we directly give the values to built-in functions. And print the function result. Here we used variable A for assigning vector values.

ALGORITHM

STEP 1: Assign variable A with vector values

STEP 2: First print original vector values

STEP 3: Call the function tail as head(A,n=1)

STEP 4: print the result of the function

R Source Code

                                          A= c(32, 40, 12, 23, 27, 38, 9, 17)
print("Original Vectors:")
print(A)
print("Access the first value of the vector:")
print(head(A, n=1))
                                      

OUTPUT

[1] "Original Vectors:"
[1] 32, 40, 12, 23, 27, 38, 9, 17
[1] "Access the first value of the vector:"
[1] 32