Skip to main content

Functions


FUNCTIONS
Functions are the already defined part of the program which can be recalled from other parts of the program as many times as needed. Functions plays an important role in helping to reduce the program code.

Function has basic three parts:
1. Function Definition
2. Function Call
3. THE FUNCTION DEFINITION

The FUNCTION DEFINATION:
The function definition deals with purpose/task of the function. It tells the python what the function does.
Syntax:
Def function_name(arguments):
Function body.
Example:
Def Add(a,b):
Print(a+b)
Arguments are the variables used in function. You cannot skip variable name in function definition.

THE FUNCTION CALL
Function call passes the variable values to function definition, the number of values must match the number of parameters.
Syntax:
Function_name(values)
Example:
Add (5,6)
Gives output
11

RETURN STATEMENT:

Return statement can be used to return function result to function call:
Def add(a,b):
Return (a+b)
Now return sends the value of sum back to function call this value may be
further used in program.
For example:
functionanswer = Add(6,11)
is equal to int functionanswer = 6+11
Labels:

Comments

Post a Comment

Popular posts from this blog

Using input command in python

Today i will show you that how can you use input command in python language, so we will write a simple program that will ask for any name or value and then print that name or value. So here is our simple program. a= input ( "Enter your name" ) print (a) as you can see we have declared "a" a variable that will ask for input "Enter your name" and then print command will print the variable "a". So anything we will type will be printed. As show in the picture below. But here you have to remember, if you are working with integers for some mathematical work than you have to declare input type as integer because then python will take input type as integer and not as word. As show in the picture below. As you can see the syntax that how can we declaring the input type,,int, we have to write int then in brackets we have to enter the input command, int stands for integer and it will declare our input as integer, we have and in print command we have instruc...
Post a Comment
Read more

Code Simple Calculator in python

  We are going to write code for a simple calculator in python, It will show you that how can you use basic python statements and function to make a calculator that will do addition, subtraction,multiplication and division. Calculator python coding: def add (a , b): return a + b def subtract (a , b): return a - b def multiply (a , b): return a * b def divide (a , b): return a / b print ( "Select Desired Operation." ) print ( "1.Add" ) print ( "2.Subtract" ) print ( "3.Multiply" ) print ( "4.Divide" ) while True : choice = input ( "Enter choice(1/2/3/4): " ) if choice in ( '1' , '2' , '3' , '4' ): num1 = float ( input ( "Enter first number: " )) num2 = float ( input ( "Enter second number: " )) if choice == '1' : print (num1 , "+" , num2 , "=" , add(num1 , num2)) elif choice == ...
Post a Comment
Read more

Factorial Program in Python

What is Factorial Program? Factorial Program in C: Factorial of n is   the product of all positive descending integers . Factorial of n is denoted by n!. For example: 5! = 5*4*3*2*1 = 120. How do you code a factorial for a loop in Python? num = int(input("enter a number: ")) fac = 1. for i in range(1, num + 1): fac = fac * i. print("factorial of ", num, " is ", fac) Factorial Program in Python # Python program to find the factorial of a number provided by the user. # change the value for a different result num = 7 # To take input from the user #num = int(input("Enter a number: ")) factorial = 1 # check if the number is negative, positive or zero if num < 0 : print ( "Sorry, factorial does not exist for negative numbers" ) elif num == 0 : print ( "The factorial of 0 is 1" ) else : for i in range( 1 ,num + 1 ): factorial = factorial*i print ( "The factorial of" ,num, "is" ...
Post a Comment
Read more