Free Programming & scenario questions questions for IGCSE Computer Science (0478), part of Algorithms & programming. Each question has the answer and the marking points an examiner would look for.
Generate a full Programming & Scenario Questions worksheet →All Algorithms & programming questionsGive the value returned by each of these expressions.
| Expression | Value |
|---|---|
| ROUND(18.613, 2) | |
| 50 MOD 8 | |
| LENGTH("Software") | |
| 50 DIV 8 |
Complete the table.
| Part | Answer and marking points | Marks |
|---|---|---|
| ROUND(18.613, 2) = 18.61; 50 MOD 8 = 2; LENGTH("Software") = 8; 50 DIV 8 = 6 ROUND(18.613, 2) = 18.61 B1 50 MOD 8 = 2 B1 LENGTH("Software") = 8 B1 50 DIV 8 = 6 B1 | 4 |
Explain the difference between a procedure and a function.
Write pseudocode for a function IsEven that takes Number as parameter and returns TRUE if the number is even and FALSE otherwise.
Explain the difference between a local variable and a global variable.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | A function returns a value to the calling statement; a procedure does not return a value A function returns a value B1 A procedure does not / is called as a statement B1 | 2 |
| (b) | FUNCTION IsEven(Number : INTEGER) RETURNS BOOLEAN / RETURN Number MOD 2 = 0 / ENDFUNCTION FUNCTION IsEven(…) with correct parameter B1 RETURNS BOOLEAN B1 RETURN Number MOD 2 = 0 B1 ENDFUNCTION B1 | 4 |
| (c) | A local variable can only be used inside the module where it is declared; a global variable can be used anywhere in the program Local: only accessible in the procedure/function where declared B1 Global: accessible throughout the whole program B1 | 2 |
Explain the difference between a procedure and a function.
Write pseudocode for a function Area that takes Length and Width as parameters and returns the area of a rectangle.
Explain the difference between a local variable and a global variable.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | A function returns a value to the calling statement; a procedure does not return a value A function returns a value B1 A procedure does not / is called as a statement B1 | 2 |
| (b) | FUNCTION Area(Length : REAL, Width : REAL) RETURNS REAL / RETURN Length * Width / ENDFUNCTION FUNCTION Area(…) with correct parameters B1 RETURNS REAL B1 RETURN Length * Width B1 ENDFUNCTION B1 | 4 |
| (c) | A local variable can only be used inside the module where it is declared; a global variable can be used anywhere in the program Local: only accessible in the procedure/function where declared B1 Global: accessible throughout the whole program B1 | 2 |
Explain the difference between a procedure and a function.
Write pseudocode for a function Fahrenheit that takes Celsius as parameter and returns the temperature in Fahrenheit.
Explain the difference between a local variable and a global variable.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | A function returns a value to the calling statement; a procedure does not return a value A function returns a value B1 A procedure does not / is called as a statement B1 | 2 |
| (b) | FUNCTION Fahrenheit(Celsius : REAL) RETURNS REAL / RETURN Celsius * 9 / 5 + 32 / ENDFUNCTION FUNCTION Fahrenheit(…) with correct parameter B1 RETURNS REAL B1 RETURN Celsius * 9 / 5 + 32 B1 ENDFUNCTION B1 | 4 |
| (c) | A local variable can only be used inside the module where it is declared; a global variable can be used anywhere in the program Local: only accessible in the procedure/function where declared B1 Global: accessible throughout the whole program B1 | 2 |
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Meet Riyaz →Original Cambridge-style practice questions written for mentorriyaz.in. These are not Cambridge past paper questions, and this site is not affiliated with or endorsed by Cambridge University Press & Assessment. Updated 2026-11-04. Paper generator · mentorriyaz.in