For the Vasanth

intha da

#returning value from a function

add = function(a,b) { #body of the function #c is a local variable #a and b are called the formal parameter c = a+b return(c) }

x = 5 #x is an actual parameter y = 6 #y is an actual parameter z = add(x,y) print(paste('X = ', x, 'Y = ', y, 'Sum = ', z), quote=FALSE)

#multi-return statements

check_sign = function(d) { if (d > 0){ print("It is positive") return("Positive") }else if (d < 0){ print("It is negative") return("Negative") }else{ print("It is Zero") return("zero") } }

f = as.numeric(n) outcome = check_sign(f) print(paste("Sign of the given ", f , " is ", outcome),quote=FALSE)

number1 = readline("Enter the number") number1 = as.numeric(number1) #convert the character datatype to numeric print(number1)

nodisplay = function(h,k) { print(h) print(k)

}

nodisplay(12,23)

#default arguement

oneval = function(z) { return(z) }

display = function(f=oneval(13),g=23,l="வண்ணகம்S") { print(f) print(g) print(l)

} display(g=100,f=14) display(13)#one argument passed and two default values used. display(23,24) #two argument passed and one default value used. display(1,2,3)#three argument passed and no default value taken. display() #only default argument and no value passed

#note: if the two variable passed then default arguments will not be used but if the one value is passed the default arguement will be used. #note: if there n argument in the function there will the n-1 is the default arguemnt #note: default arguments should be given from right to left and non default arguement should be precieved in the the starting.

#named arguments

display(g=100,f=14) #default arguement can be manipulated by the use of named arguement. #we can't use the same named actual arguement for other arguement name in the same function. #named arguement can be passed in any order.

#one function calling another function #solving a problem using functions

#similary write functions for the other arithmetic operator