C Programming Decision Making

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Questions and Answers

What will be the output of the following code: if (i < 15) printf('i is smaller than 15'); else printf('i is greater than 15'); with i initialized as 20?

i is greater than 15 (correct)

Error in code

i is smaller than 15

No output will be produced

In a nested if statement, when is the inner if block executed?

When the inner if block is independent of the outer if

When the outer if condition is true (correct)

When both the outer and inner conditions are false

When the inner if condition is true

How does an if-else-if ladder behave when a condition is true?

Only the true condition's statement is executed, and others are bypassed (correct)

It creates an infinite loop

None of the statements are executed

All statements are executed after the true condition

What is the purpose of the else statement?

To provide a block of code that executes when the if condition is false Signup and view all the answers

What will the output of the nested if example be if the variable i is set to 10?

i is smaller than 15 Signup and view all the answers

Which statement accurately describes the if statement in C?

It can execute only one statement without needing braces. Signup and view all the answers

What happens if no curly braces are provided after an if statement in C?

Only the first statement after the if is included in the if block. Signup and view all the answers

Which statement correctly describes the syntax of an if statement in C?

if (condition) { statements; } else { statements; } Signup and view all the answers

Which of the following is true about the if-else-if statement?

It allows for multiple conditions to be checked in sequence Signup and view all the answers

Which of these is NOT a decision-making statement in C?

while loop Signup and view all the answers

When all conditions in an if-else-if ladder are false, which block is executed?

The last else block Signup and view all the answers

In the context of decision making in C, what does the if-else-if ladder enable?

It enables multiple conditions to be checked in a single structure. Signup and view all the answers

Which of the following correctly describes the output of the given C program if `i` is initialized to 10?

It will only print 'I am Not in if'. Signup and view all the answers

What role do jump statements play in decision making in C?

They modify the flow of execution based on conditions. Signup and view all the answers

In an if statement, which of the following is true about the condition?

It can include logical operators for complex conditions. Signup and view all the answers

What is the result of using the 'goto' statement in decision making?

It can disrupt the flow of decision-making logic. Signup and view all the answers

What will be the output of the provided program if the value of 'i' is 20?

i is 20 Signup and view all the answers

What does the break statement do when encountered in a loop?

Terminates the loop and exits immediately Signup and view all the answers

In the provided linear search example, what will happen if the key is not found in the array?

The function will return without printing anything Signup and view all the answers

What is the primary purpose of the continue statement in a loop?

To skip the rest of the current iteration and continue to the next iteration Signup and view all the answers

Which statement correctly describes the flow of control when a break statement is used?

It exits the loop immediately, continuing thereafter from the first statement outside the loop Signup and view all the answers

What condition is necessary to cause a break in the findElement function during the search?

The current element must match the key being searched Signup and view all the answers

What would happen if the code inside the loop following a continue statement is crucial for the iteration?

The skipped code will affect the loop's logic Signup and view all the answers

When should a developer consider using break statements in their code?

When they need to terminate a loop based on specific conditions Signup and view all the answers

Study Notes

Decision Making in C

Decision making is crucial in programming, guiding the flow of execution based on conditions.
Common C decision-making statements include: if, if-else, nested if, if-else-if ladder, and switch statements.
Jump statements such as break, continue, goto, and return control the program flow during decision-making.

If Statement

The simplest decision-making statement.
Executes a block of code if a specified condition is true.
Syntax:
```
if(condition) {
    // Statements
}
```
Without curly braces, the first statement after if is considered the block’s content.

If-Else Statement

Extends if statement functionality by allowing an alternative block if the condition is false.

Syntax:

if(condition) {
    // Executes if condition is true
} else {
    // Executes if condition is false
}

Nested If Statements

Allows placing an if statement inside another if statement for more complex conditions.
Useful for evaluating multiple conditions sequentially.

Syntax:

if(condition1) {
    if(condition2) {
        // Executes if both conditions are true
    }
}

If-Else-If Ladder

Provides a way to choose between multiple options.
Evaluates conditions from top to bottom, executing only the first true condition's block.

Syntax:

if(condition1) {
    // Executes if condition1 is true
} else if(condition2) {
    // Executes if condition2 is true
} else {
    // Executes if none above are true
}

Jump Statements

Control execution flow unconditionally.
Types of jump statements in C include:
- Break: Terminates loops or switch statements immediately.
- Continue: Skips the current iteration and proceeds to the next iteration of the loop.
- Goto: Jumps to a labeled statement in the code (less commonly used).
- Return: Exits from a function and optionally returns a value.

Examples and Output

If Statement Example:
- Input: int i = 10; with if (i > 15).
- Output: "I am Not in if" since the condition is false.
If-Else Example:
- Input: int i = 20; evaluates if i < 15.
- Output: "i is greater than 15", as the condition fails.
Nested If Example:
- Input: int i = 10; with nested conditions.
- Output: "i is smaller than 15" and "i is smaller than 12 too" confirmed by true evaluations.
If-Else-If Ladder Example:
- Input: int i = 20;.
- Output: "i is 20", as it matches the specified condition.
Break Statement Example:
- Used within a loop for boolean checks to exit early when a condition is met.
Continue Statement Example:
- Forces the loop to skip any remaining code following it in the current iteration.

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Description

This quiz explores decision-making concepts in C programming. It covers how to implement conditional statements to control the flow of code execution based on specific conditions. You'll encounter various scenarios that require choosing the next action based on given criteria.

C Programming Decision Making

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Podcast

Questions and Answers

What will be the output of the following code: if (i < 15) printf('i is smaller than 15'); else printf('i is greater than 15'); with i initialized as 20?

In a nested if statement, when is the inner if block executed?

How does an if-else-if ladder behave when a condition is true?

What is the purpose of the else statement?

What will the output of the nested if example be if the variable i is set to 10?

Which statement accurately describes the if statement in C?

What happens if no curly braces are provided after an if statement in C?

Which statement correctly describes the syntax of an if statement in C?

Which of the following is true about the if-else-if statement?

Which of these is NOT a decision-making statement in C?

When all conditions in an if-else-if ladder are false, which block is executed?

In the context of decision making in C, what does the if-else-if ladder enable?

Which of the following correctly describes the output of the given C program if i is initialized to 10?

What role do jump statements play in decision making in C?

In an if statement, which of the following is true about the condition?

What is the result of using the 'goto' statement in decision making?

What will be the output of the provided program if the value of 'i' is 20?

What does the break statement do when encountered in a loop?

In the provided linear search example, what will happen if the key is not found in the array?

What is the primary purpose of the continue statement in a loop?

Which statement correctly describes the flow of control when a break statement is used?

What condition is necessary to cause a break in the findElement function during the search?

What would happen if the code inside the loop following a continue statement is crucial for the iteration?

When should a developer consider using break statements in their code?

Study Notes

Decision Making in C

If Statement

If-Else Statement

Nested If Statements

If-Else-If Ladder

Jump Statements

Examples and Output

Studying That Suits You

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