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Questions and Answers
What is one of the most important concepts in computer programming?
What is one of the most important concepts in computer programming?
Decision making and branching
Which of the following is NOT a decision making statement in C?
Which of the following is NOT a decision making statement in C?
The if statement is used to control the flow of execution in C programming.
The if statement is used to control the flow of execution in C programming.
True
What happens if the test condition in a simple if statement is satisfied?
What happens if the test condition in a simple if statement is satisfied?
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In C programming, the __________ statement is an extension of the simple if statement.
In C programming, the __________ statement is an extension of the simple if statement.
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A program should make logical decisions based on the condition provided which results in __________.
A program should make logical decisions based on the condition provided which results in __________.
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How many different forms can an if statement be implemented in C?
How many different forms can an if statement be implemented in C?
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What does an if statement evaluate before transferring control?
What does an if statement evaluate before transferring control?
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What must be true for the statement-x to be executed in a simple if statement?
What must be true for the statement-x to be executed in a simple if statement?
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Study Notes
Objectives of Chapter
- Understand decision making in C programming.
- Develop skills using if conditions in different formats.
- Learn the application of switch statements in C.
- Interpret the use of if...else instead of the conditional operator.
Decision Making in C
- Essential for logical decisions (true/false) based on conditions.
- Programs address specific problems, requiring important decisions for solutions.
- Allows control of execution flow based on decisions made.
Holiday Trip Problem Example
- Decision criteria involve receiving 10,000 Rupees or more for a foreign trip.
- If less than 10,000 Rupees, the plan changes to a countryside trip.
- Requires designing a program that implements conditional logic.
Decision Making Statements in C
- C supports decision making and branching with:
- If statement
- Switch statement
- Conditional operator statement
- Goto statement
- Known as decision making or control statements, they manage the flow of execution.
Using the if Statement
- The if statement controls flow based on conditions.
- It involves a test condition:
if (test-condition). - The expression is evaluated, directing flow based on its truth value into different program paths.
Forms of the if Statement
- Simple if statement
- If...else statement
- Nested if...else statement
- Else if ladder
Simple if Statement Structure
- General structure:
if (test_condition) { statement-block; } statement x; - Executes the statement block if the condition is true, followed by statement x.
- If the condition is false, the statement block is skipped, executing statement x directly.
Simple if Statement Example
- Example code demonstrating user input:
#include <stdio.h> void main() { int number = 0; printf("\nEnter an integer between 1 and 10: "); scanf("%d", &number); if (number > 7) printf("You entered %d which is greater than 7\n", number); if (number < 3) printf("You entered %d which is less than 3\n", number); }
if...else Statement Overview
- An extension of the simple if statement.
- Executes true block if the condition is true, otherwise executes the false block.
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Description
This quiz focuses on the branch and loop statements in C language, covering essential decision-making concepts. Learn how to utilize different if conditions and the switch statement effectively. Master the use of if...else as an alternative to the conditional operator in programming.
