PSEUDOCODE & FLOW CHART

1. PSEUDOCODE & FLOW CHART

2. HOW TO PLAN YOUR PROGRAM • PROGRAM CAN BE REPRESENT USING : • PSEUDOCODE • FLOW CHART • NS (NASSI SCHIDERMAN) CHART

3. 1. PSEUDOCODE What is THAT ?? #$%$**$%#%#@ • Pseudocode consists of short, English phrases used to explain specific tasks within a program's algorithm (The algorithm is a set of precise instructions specifying how to carry out a specific task. • Pseudocode should not include keywords in any specific computer languages. It should be written as a list of consecutive phrases. • You should not use flowcharting symbols but you can draw arrows to show looping processes. • Indentation can be used to show the logic in pseudocode as well. • One programmer should be able to take another programmer's pseudocode and generate a program based on that pseudocode.

4. Why PSEUDOCODE is necessary? The programming process is a complicated one. You must first understand the program specifications, then organize your thoughts and create the program. You must break the main tasks that must be accomplished into smaller ones in order to be able to eventually write fully developed code. Writing pseudocode WILL save you time later during the construction & testing phase of a program's development.

5. How to write PSEUDOCODE? • Make a list of the main tasks that must be accomplished on a piece of scratch paper. • Then, focus on each of those tasks, try to break each main task down into very small tasks that can each be explained with a short phrase. There may eventually be a one-to-one correlation between the lines of pseudocode and the lines of the code that you write after you have finished pseudocoding.

6. Begin/ End Display [ printf] Data [ scanf ] Decision [if, if .. else] Process [ assignment statement or any other statement] Predefined process [ function] Connector Off page connector Flow 2. FLOW CHART

7. Example 1 –Program Specifications Write a program that obtains two integer numbers from the user. It will print out the sum of those numbers.

8. PSEUDOCODE Prompt the user to enter the first integerObtain user's first integer inputPrompt the user to enter a second integerObtain user's second integer inputAdd first integer and second integerStore the result in another variableDisplay an output prompt that explains the answer as the sumDisplay the result

9. Start Prompt user “Enter first integer” Read first integer Prompt user “Enter second integer” Read second integer Result = First Integer + Second Integer Display result of addition two integer numbers End FLOW CHART

10. Example 2 // example of if statements #include <stdio.h> void main() { int guess_input; printf( “Please enter a whole number\n”); scanf("%d",&guess_input); if (guess_input==1) { printf( “Right number !\n”); printf( "Well Done.\n” ); } }

11. Start Prompt user “Enter any number” Read a number TRUE Prompt user “Right number ! Well done!” If number is 1 FALSE End FLOW CHART