In this tutorials, we are going to create a simple calculator using python. For this ,we ask user to select the operation which are mention below
- 1 for addition
- 2 for subtraction
- 3 for division
- 4 for multiplication
Again ask the user to insert the number for desired operation
In this program we used function,operators and if else statement.
- Function in python
Function are those command of code which will only run when it is called.In python function is define by def keyword.
Syntax:
def addition(x,y):
return x + y
return x + y
- Operators in Python
Operators are used to perform the mathematical operation. In this program we used +,-,/ and * arithmetic operators to perform addition ,subtraction ,division and multiplication respectively.
Syntax:
x + y
x - y
x / y
x * y
- if else in python(conditional statement)
Conditional statements are used to perform the unrelated action under the different condition.
Syntax:
if choice== '1':
{
Addition
}
Addition
}
elif choice== '2':
{
subtraction
}
elif choice== '3':
{
division
}
elif choice== '4':
{
multiplication
}
else
{
invalid input
}
Code:
def addition(x, y):
return x + y
def subtract(x, y):
return x - y
def division(x, y):
return x / y
def multiplication(x, y):
return x * y
print("Select operation.")
print("1.Addition")
print("2.Subtract")
print("3.division")
print("4.multiplication")
choice = input("Enter choice(1/2/3/4): ")
a = float(input("Enter first number: "))
b = float(input("Enter second number: "))
if choice == '1':
print(a,"+",b,"=", addition(a,b))
elif choice == '2':
print(a,"-",b,"=", subtract(a,b))
elif choice == '3':
print(a,"/",b,"=", division(a,b))
elif choice == '4':
print(a,"*",b,"=", multiplication(a,b))
else:
print("Invalid input")
Output
