Algorithm

It is step by step procedure to solve any problem.

Characteristics of an algorithm:

1. All the steps of an algorithm must be executed in sequence to obtain the output.
2. An algorithm must terminate after a finite number of steps.
3. It may take zero or more inputs.
4. It must give at least one output.

Algo: Find area and perimeter of square

1. Start/Begin
2. Enter side of square
3. perimeter = 4*side
4. area = side*side
5. Print perimeter
6. Print area
7. Stop/End

Algo- Find area and perimeter of rectangle

1. Start/Begin
2. Enterlength and breadth as l & b of rectangle
3. perimeter = 2*(l+b)
4. area = l*b
5. Print perimeter
6. Print area
7. Stop/End

Algo- Find total & percentage of a student based on marks in five subjects

1. Start/Begin
2. Enter marks in five subjects as m1,m2, m3, m4, m5
3. Total = m1+m2+m3+m4+m5
4. Percentage = Total/5
5. Print total
6. Print percentage
7. Stop/Exit