Python Project – Simple Calculator

Program 1

#Simple calculator
# Function for Addtion
def add(x,y):
    return(x+y)
def sub(x,y):
    return(x-y)
def div(x,y):
    if y != 0:
        return x / y
    else:
        return "Cannot divide by zero"
def multiply(x,y):
    return(x*y)


# Main 
print("------------------Simple Calcultor-----------------")
print("1. Add \n2. Subtract \n3. Multiply \n4.Division")
print("----------------------------------------------------")
choice=int(input("Enter your choice(1,2,3,4)"))

num1=float(input("Enter first number"))
num2=float(input("Enter second number"))
if(choice==1):
    print(add(num1,num2))
elif(choice==2): 
    print(sub(num1,num2))   
elif(choice==3): 
    print(multiply(num1,num2))
elif(choice==4): 
    print(div(num1,num2))           
else:
    print("Invaliv choice")    

Program 2

# Simple calculator
def add(x,y):
    return(x+y)
def sub(x,y):
    return(x-y)
def div(x,y):
    if y != 0:
        return x / y
    else:
        return "Cannot divide by zero"
def multiply(x,y):
    return(x*y)
print("----------Simple Calculator---------------")
num1=float(input("Enter first number"))
num2=float(input("Enter second number"))
choice=input("Enter operator( + , - ,* , /)")
if(choice=='+'):
    print(add(num1,num2))
elif(choice=='-'):
    print(sub(num1,num2))    
elif(choice=='*'):
    print(multiply(num1,num2))        
elif(choice=='/'):
    print(div(num1,num2))        
else:
    print(" Invalid operator" )