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ASSIGNMENT NO.1

#create a new variable called my.num that contains 6 numbers

my.num <- seq(1,6)
print(my.num)

## [1] 1 2 3 4 5 6

#mulitply my.num by 4

print(my.num * 4)

## [1]  4  8 12 16 20 24

#create a second variable called my. char that contains 5 character strings

my.char <- c("Pakistan","China","India","California","Itly")
my.char

## [1] "Pakistan"   "China"      "India"      "California" "Itly"

#combine the two variables my. num and my. char into a variable called both 

both <- paste(my.num,my.char)
both

## [1] "1 Pakistan"   "2 China"      "3 India"      "4 California" "5 Itly"      
## [6] "6 Pakistan"

#what is the length of both?

length(both)

## [1] 6

# what class is both?

typeof(both)

## [1] "character"

#divide both by 3, what happens?
#print(both/3)
#This show error cause we cannot divide an integer number with character object and here both becomes character object.

#create a vector with elements 1 2 3 4 5 6 and call it x 
x <- seq(1,6)
x

## [1] 1 2 3 4 5 6

#create another vector with elements 10 20 30 40 50 and call it y

y <- seq(10,50,10)
y

## [1] 10 20 30 40 50

#what happens if you try to add x and y together?why?

x+y 

## Warning in x + y: longer object length is not a multiple of shorter object
## length

## [1] 11 22 33 44 55 16

# why?
#comments: Ans when we try to add x and y it show warning message(In x + y : longer object length is not a multiple of shorter object length) and automatically append dummy value at the end of the vector here it add 16 at the end of the vector elements.

#append the value 60 onto the vector y (hint: you can use the c() function) 

y <- append(y,60)
y

## [1] 10 20 30 40 50 60

#add x and y together

x+y

## [1] 11 22 33 44 55 66

#multiply x and y together. pay attention to how R performs operations on vectors of the same length

x*y

## [1]  10  40  90 160 250 360