7.WAP to accept any two numbers and exchange their values without using the third variable.

Method 1:

Code:

a=int(input("Enter the 1 number "))

b=int(input("Enter the 2 number "))

print("Before swapping ")

print("a=",a," b=",b)

a=a+b

b=a-b

a=a-b

print("Before swapping ")

print("a=",a," b=",b)

Output:

Enter the 1 number 5

Enter the 2 number 6

Before swapping

a= 6  b= 3

Before swapping

a= 3  b= 6

Method 2:

Code:

a=int(input("Enter the 1 number "))

b=int(input("Enter the 2 number "))

print("Before swapping ")

print("a=",a," b=",b)

a,b=b,a

print("Before swapping ")

print("a=",a," b=",b)

Output:

Enter the 1 number 5

Enter the 2 number 6

Before swapping

a= 6  b= 3

Before swapping

a= 3  b= 6