
Understanding Loops and Functions
Authored by Karen Tan
Information Technology (IT)
12th Grade
Used 1+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
What is the primary difference between a for loop and a while loop?
A for loop can only iterate over arrays, while a while loop can iterate over any data type.
A while loop is always faster than a for loop regardless of the situation.
A for loop requires a condition to terminate, while a while loop does not.
The primary difference is that a for loop is used for a known number of iterations, while a while loop is used for an unknown number of iterations based on a condition.
2.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
How do you declare a pointer in C?
int ptr;
pointer int *ptr;
int &ptr;
int *ptr;
3.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
What is the output of the following code snippet: int a = 5; int *p = &a; printf('%d', *p);?
4
5
6
10
4.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
Explain the purpose of user-defined functions in programming.
User-defined functions in programming serve to create reusable code blocks that enhance organization, readability, and maintainability.
User-defined functions are only used for debugging purposes.
User-defined functions are mandatory for all programming languages.
User-defined functions can only be used once in a program.
5.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
What will happen if you try to dereference a null pointer?
The program will continue running without any issues.
A runtime error occurs, often leading to a crash.
A warning message will be displayed, but execution will proceed.
The pointer will automatically be assigned a valid memory address.
6.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
Write a simple for loop that prints numbers from 1 to 10.
for (let i = 1; i < 10; i++) { console.log(i); }
for (let i = 1; i <= 5; i++) { console.log(i); }
for (let i = 0; i < 10; i++) { console.log(i); }
for (let i = 1; i <= 10; i++) { console.log(i); }
7.
MULTIPLE CHOICE QUESTION
5 mins • 20 pts
What is the syntax for a do-while loop?
while (condition) { /* code block */ } do;
do { /* code block */ } while (condition);
do { /* code block */ } until (condition);
do (condition) { /* code block */ } while;
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