Introduction to Computer Science - Algorithms for Problem Solving

Running head: INTRODUCTION TO COMPUTER SCIENCE
Introduction to Computer Science
Name of the Student
Name of the University
Author’s Note

1
INTRODUCTION TO COMPUTER SCIENCE
Solution Algorithm 1:
Defining Problem:
Input Processing Output
Recording transaction
 Retail_cost
 Transaction_code
 Employee_No.
Reading transaction
Calculating commission
Printing details of
transaction
Retail cost
Commission
Employee No.
Pseudo code algorithm:
If the case of solution is not A, B or C then a message is printed and commission set
as 0.
Process transaction record
Read retail_cost, transaction_code and employee_no.
CASE Transaction_Code
A: Commission = retail_cost x 0.06
B: Commission = retail_cost x 0.08
C: Commission = retail_cost x 0.1
Other: Displaying ‘Invalid transaction’, Transaction_code commission = 0
END CASE
Print ‘Retail Price’, retail_cost, ‘Commission’, commission, ‘Employee No.’, Employee_No.
END

2
INTRODUCTION TO COMPUTER SCIENCE
Desk check of the algorithm:
1. INPUT:
1st Set of Data 2nd Set of Data
Retail_cost 50$ ABC
Transaction_code A C
Employee_No. 12345 34567
2. Result Expected
1st Set of Data 2nd Set of Data
Commission 3$ ERROR
3. Check Table
Statement No. Retail_Price Transaction_Cod
e
Emloyee_No. Commission
1st Pass
1. 50$ A 12345
2. 3$
3. Print
2nd Pass
1. ABC C 34567
2. ERROR
3. Print

3
INTRODUCTION TO COMPUTER SCIENCE
Solution Algorithm 2:
Defining Problem:
Input Processing Output
serial_no. Analyse student record serial_no.
exam_point Computing grade_letter exam_point
Print detailed result grade_letter
Pseudo code algorithm:
Using nested IF framework and CASE statement
Process_student_grade_letter
Read_student_serial_no., student_exam_marks
CASE of grade_letter
HD: exam_marks>84
D: exam_marks>74
C: exam_marks>64
P: exam_marks>59
F: exam_marks<50
ENDCASE
Print student_serial_no., exam_marks, grade_letter