Conditional Statements(Unlocking decissions in code).pptx
- 1. Conditional Statements Understanding if, else, switch statements
- 2. Introduction •Conditional statements allow us to make decisions in programs based on conditions. •It helps control the flow of execution depending on whether a condition is true or false.
- 3. Types of Conditional Statements in C •1. If statement •2. If-else statement •3. Nested If-else statement •4. Switch statement
- 4. If Statement • Syntax: if (condition) { // Code to be executed if the condition is true }; • Example: int num = 10;if (num > 5) { printf("Number is greater than 5"); };
- 5. If-Else Statement • Syntax: • if (condition) { // Code to be executed if condition is true} else { // Code to be executed if condition is false} • Example: int num = 3;if (num > 5) { printf("Number is greater than 5");} else { printf("Number is less than or equal to 5");}
- 6. Nested If-Else Statement • Syntax: • if (condition1) { if (condition2) { // Code for condition2 } else { // Code for else condition2 }} else { // Code for else condition1} • Example: • int num = 15;if (num > 10) { if (num % 2 == 0) { printf("Number is even and greater than 10"); } else { printf("Number is odd and greater than 10"); }}
- 7. Switch Statement • Syntax: • switch (expression) { case value1: // Code to be executed if expression equals value1 break; case value2: // Code to be executed if expression equals value2 break; default: // Code to be executed if expression doesn't match any case} • Example: int num = 2;switch (num) { case 1:printf("Number is 1"); break; case 2: printf("Number is 2"); break; default: printf("Number is neither 1 nor 2");}
- 8. Comparison of If-Else and Switch •If-Else: •Flexible and can evaluate complex conditions. •Suitable for a range of different data types. •Switch: •Best for handling multiple discrete values of the same variable. •More efficient when dealing with multiple case conditions.
- 9. Common Errors in Conditional Statements •Forgotten Break: •Omitting the break in a switch can cause unwanted fall-through. •Incorrect Condition: •Using the wrong operators or logic in conditions. •Unreachable Code: •Placing code after a return or break in the wrong places.
- 10. Conclusion •Summary: •Conditional statements are crucial for making decisions in C programs. •We have learned about if, if-else, nested if-else, and switch statements. •Takeaway: •Proper usage of conditional statements helps control the flow of logic based on conditions.