An algorithm to swap two numbers using a third variable

Write an algorithm to swap two numbers using a third variable:-

Step 1 : START 

Step 2 : Declare variables  a , b and temp .

Step 3 : Read the values of variable  a and b.

Step 4 : temp = a ;    a = b ;    b = temp ;

Step 5 : Display the values of  a and b .

Step 6 : STOP