Question

Write algorithm and flowchart for exchanging of two variables

Answer 1

Algorithm : a. using a third variable

Step 1 : Start

Start 2 : READ num1, num2

Start 3 : temp = num1

Start 4 : num1 = num2

Start 5 : num2 = temp

Start 6 : PRINT num1, num2

Start 7 : Stop

Algorithm : b. without using a third variable

Step 1 : Start

Start 2 : READ num1, num2

Start 3 : num1 = num1 + num2

Start 4 : num2 = num1 - num2

Start 5 : num1 = num1 - num2

Start 6 : PRINT num1, num2

Start 7 : Stop