Practice Quiz

What is the syntax for a simple if statement in C?

• if(condition) { Statement-block; }

• if { condition }

• if(condition) then { Statement-block; }

• if: condition { Statement-block; }

Answer explanation

The correct syntax for a simple if statement in C is 'if(condition) { Statement-block; }'. This format includes the condition in parentheses followed by a block of statements in curly braces.

What does the else if statement do in C?

• Executes a block of code if the previous condition is false

• Always executes regardless of the condition

• Terminates the program

• None of the above

Answer explanation

The 'else if' statement in C allows the program to execute a specific block of code only if the preceding condition is false. This enables multiple conditional checks in a structured way, making it clear and efficient.

What is the purpose of the switch statement?

• To execute a block of code based on a variable's value

• To loop through a block of code

• To create a function

• To declare variables

Answer explanation

The switch statement is used to execute a block of code based on the value of a variable. It allows for cleaner and more organized code when dealing with multiple conditions compared to using multiple if-else statements.

What happens when a break statement is encountered inside a loop?

• The loop is terminated

• The loop continues

• The program crashes

• None of the above

Answer explanation

When a break statement is encountered inside a loop, it immediately terminates the loop, causing the program to exit the loop's block of code and continue with the next statement following the loop.

What does the continue statement do in a loop?

• Skips the current iteration and continues with the next

• Terminates the loop

• Exits the program

• None of the above

Answer explanation

The continue statement in a loop skips the current iteration when encountered and proceeds to the next iteration. This allows the loop to continue running without executing the remaining code in the current iteration.

What is the syntax for a for loop in C?

• for(initialization; condition; increment) { statements; }

• for { initialization; condition; increment }

• for(initialization; condition) { statements; }

• for: initialization; condition; increment { statements; }

Answer explanation

The correct syntax for a for loop in C is 'for(initialization; condition; increment) { statements; }'. This structure includes initialization, a condition to check, an increment step, and the block of statements to execute.

What is the purpose of the goto statement?

• To transfer control to a predefined label

• To create a loop

• To declare a variable

• To exit a function

Answer explanation

The goto statement is used to transfer control to a predefined label in the code, allowing for non-linear jumps in execution. This makes 'To transfer control to a predefined label' the correct choice.

What is the syntax of a nested for loop?

• for (initialization; condition; update) { for(initialization; condition; update) { // inner loop statements. } // outer loop statements. }

• for (initialization; condition; update) { // outer loop statements. for(initialization; condition; update) { // inner loop statements. } }

• for (initialization; condition; update) { // inner loop statements. } for(initialization; condition; update) { // outer loop statements. }

• for (initialization; condition; update) { // outer loop statements. }

Answer explanation

The correct syntax for a nested for loop is: 'for (initialization; condition; update) { for(initialization; condition; update) { // inner loop statements. } // outer loop statements. }'. This structure allows one loop to be contained within another.

What is the syntax of a nested while loop?

• while(condition) { while(condition) { // inner loop statements. } // outer loop statements. }

• while(condition) { // outer loop statements. while(condition) { // inner loop statements. } }

• while(condition) { // inner loop statements. } while(condition) { // outer loop statements. }

• while(condition) { // outer loop statements. }

Answer explanation

The correct syntax for a nested while loop is: while(condition) { while(condition) { // inner loop statements. } // outer loop statements. }. This structure allows the inner loop to execute multiple times for each iteration of the outer loop.

What are the advantages of arrays?

• They allow random access to elements.

• They can be resized during runtime.

• They are easy to sort and search.

• They can store different data types.

Answer explanation

Arrays allow random access to elements, meaning you can quickly retrieve any element using its index. They are also easy to sort and search due to their contiguous memory allocation, making operations efficient.