PseudoCode Cheat Sheet

INPUT / OUTPUT

• Input - variable value comes from the user
   1. INPUT variable
• Output - output variable value
   1. OUTPUT variable
• Display - display variable value
   1. DISPLAY variable
• Print - print variable value
   1. PRINT variable
• Note: you can input and output multiple times in 1 INPUT / OUTPUT statement
   1. INPUT variable1 , variable2 ...
 2. OUTPUT variable1 , variable2 ...

SELECTION

• Regular IF
  •  1. IF condition THEN
 2.     // code
 3. ENDIF
• IF...ELSE
  •  1. IF condition THEN
 2.     // code
 3. ELSE
 4.     // code
 5. ENDIF
• IF...ELSEIF...ELSE
  •  1. IF condition THEN
 2.     // code
 3. ELSEIF condition THEN
 4.     // code
 5. ELSE
 6.     // code
 7. ENDIF
• NESTED SELECTION
  •  1. IF condition THEN
 2.     // code
 3. ELSE
 4.     IF condition THEN
 5.        // code
 8.     ELSE
 9.        // code
10.     ENDIF
11. ENDIF

Case of

•  1. CASE variable OF
 2.     value1: statement
 3.     value2: statement
 4.     value3: statement
 5.     OTHERWISE: statement
 6. ENDCASE

Iteration (Looping)

• using FOR
•  1. FOR i = 1 TO endValue
 2.     // code
 3. NEXT i
• using WHILE
•  1. WHILE condition DO
 2.     // code
 3. ENDWHILE
• using REPEAT
•  1. REPEAT
 2.     // code
 3. UNTIL condition

Procedures & Functions

• Declaration - without parameters
•  1. BEGIN functionName
 2.     // code
 3. END functionName
• Declaration - with parameters
•  1. BEGIN functionName (parameter1, parameter2 ...)
 2.     // code
 3. END functionName
• Calling
•  1. Call functionName // without parameters
 2. Call functionName (parameter1, parameter1, ...) // with parameters


Some existing functions

• MOD -> Returns the remainder of division
•  1. MOD(num1,num2)
• DIV -> Returns the integer quotient of division
•  1. DIV(num1,num2)
• INT -> Returns integer part of decimal / floor of number
•  1. INT(num1)
• ROUND -> Returns a round up of a decimal number
•  1. ROUND(num, numOfDecimalPlaces)
• RANDOM -> Returns a random decimal between 0 and 1 inclusive
•  1. RANDOM()

String manipulation

• LENGTH -> To find the string's length
•  1. LENGTH("My string") // returns 9
• SUBSTRING -> To extract a substring from a string
• -> The first parameter is the string (or string variable) and the second is the starting character index and the third parameter is the length to select from the starting character index
•  1. SUBSTRING("My string", 3, 6) // returns "string"
• UCASE -> To convert to uppercase
•  1. UCASE("My string") // returns "MY STRING"
• LCASE -> To convert to lowercase
•  1. LCASE("My string") // returns "my string"

File Management

• Declaration of needed variables
 1. DECLARE file: STRING // takes the path of the file for example "file.txt"
 2. DECLARE variable: STRING // this will take the values of each line read from the file

• Read -> To read a file line by line
•  1. OPENFILE file FOR READ
 2.     READFILE file, variable
 3.     OUTPUT variable // you can output here though
 4. CLOSEFILE file
• Write -> To write on a file line by line
•  1. OPENFILE file FOR WRITE
 2.     WRITEFILE file, variable
 3.     OUTPUT variable // you can output here though
 4. CLOSEFILE file