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Questions and Answers
What is the purpose of decision control statements in C programming?
What is the purpose of decision control statements in C programming?
- To execute statements sequentially regardless of conditions.
- To create condensed code that does not require conditions.
- To eliminate unnecessary loops in the program.
- To execute a group of statements based on whether a condition is true or false. (correct)
Which of the following is NOT a type of decision-making control statement in C?
Which of the following is NOT a type of decision-making control statement in C?
- Ternary Operator (correct)
- Switch..case Statement
- The if Statement
- The if..else Statement
In the if statement, what happens if the condition evaluates to false?
In the if statement, what happens if the condition evaluates to false?
- The statements inside the IF body are executed.
- The program terminates immediately.
- The statements inside the IF body are skipped. (correct)
- The program enters an infinite loop.
What is the required syntax for an if statement in C?
What is the required syntax for an if statement in C?
Which statement correctly describes the if...else construct?
Which statement correctly describes the if...else construct?
What does a nested if statement allow a programmer to do?
What does a nested if statement allow a programmer to do?
What is a key feature of the switch..case statement?
What is a key feature of the switch..case statement?
What is the output of the following code if a = 5 and b = 5? if (a == b) { printf("%d is equal to %d", a, b); }
What is the output of the following code if a = 5 and b = 5? if (a == b) { printf("%d is equal to %d", a, b); }
What will happen if the condition in an IF statement evaluates to true?
What will happen if the condition in an IF statement evaluates to true?
Which of the following is a correct syntax for an IF statement in C?
Which of the following is a correct syntax for an IF statement in C?
In the syntax of the conditional operator, what does the expression 'condition ? Statement1 : Statement2;' evaluate?
In the syntax of the conditional operator, what does the expression 'condition ? Statement1 : Statement2;' evaluate?
What is a critical use case for the IF-ELSE structure in algorithms?
What is a critical use case for the IF-ELSE structure in algorithms?
Which statement about the ELSE block in an IF-ELSE structure is true?
Which statement about the ELSE block in an IF-ELSE structure is true?
If 'a' and 'b' are both equal, what output will the corresponding C program produce?
If 'a' and 'b' are both equal, what output will the corresponding C program produce?
When should the conditional operator be preferred over an IF-ELSE statement?
When should the conditional operator be preferred over an IF-ELSE statement?
What is the purpose of the 'read(a,b)' operation in the algorithm example?
What is the purpose of the 'read(a,b)' operation in the algorithm example?
Flashcards
Decision Control Statements
Decision Control Statements
A control statement that executes different code blocks based on whether a condition is true or false.
if Statement
if Statement
A conditional statement that executes a set of statements only if a given condition is true.
if Statement Flowchart
if Statement Flowchart
A flowchart shape representing the execution flow of an if statement based on the condition being true or false.
Condition
Condition
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The if..else Statements
The if..else Statements
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if..else Statement Flowchart
if..else Statement Flowchart
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Conditional Operator
Conditional Operator
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Condition in Conditional Operator
Condition in Conditional Operator
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Statement1 in Conditional Operator
Statement1 in Conditional Operator
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Statement2 in Conditional Operator
Statement2 in Conditional Operator
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Nested..if Statements
Nested..if Statements
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switch..case Statements
switch..case Statements
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Case Block
Case Block
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Case Label
Case Label
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break in switch..case
break in switch..case
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default case in switch..case
default case in switch..case
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Study Notes
Decision Control Statements
- Decision control statements execute a group of statements based on a condition.
- There are four types of decision control statements in the C programming language:
- The if Statement
- The if..else statements
- Nested..if statements
- switch..case statements
The if Statement
- The if statement provides decision-making capabilities in C.
- Syntax:
if (condition) { statement/s to be executed if condition is true; }
- If the condition in the if statement evaluates to true, the statements within the curly braces are executed. If the condition is false, the statements are skipped.
- Flowchart: The flowchart shows that if the 'condition' is true, then the 'statement' is executed; otherwise, the program continues without executing the 'statement'.
The if..else Statements
- If..else statements execute a set of statements when the condition is true and another set of statements when the condition is false.
- Syntax:
if (condition) { statement/s to be executed if condition is true; } else { statement/s to be executed if condition is false; }
- If the condition is true, the statements inside the first curly braces are executed. If the condition is false, the statements inside the second curly braces are executed.
- Flowchart: The flowchart visualizes the execution flow. Based on the 'condition', either the 'true statement' or the 'false statement' is executed.
Conditional Operator
- Also known as the ternary operator, the conditional operator works with three operands and behaves similarly to the 'if-else' statement.
- Syntax:
condition ? Statement1 : Statement 2;
- If the condition is true, Statement1 is executed. If the condition is false, Statement2 is executed.
- This is a shorter and more concise way to express simple conditional statements compared to the 'if-else' statement.
Example of Conditional Operators
- Example 1: Finding the maximum value between two variables 'a' and 'b' and assigning it to 'z':
z = (a > b) ? a : b;
- This is equivalent to the following 'if-else' statement:
if (a > b) z = a; else z = b;
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Description
Explore the fundamentals of decision control statements in C programming. This quiz covers various types, including if statements, if..else statements, nested if, and switch..case statements. Test your understanding of how these statements control the flow of a program based on specified conditions.