Understanding If-Else in C Programming

What is the correct syntax for an if-else statement in C?

• if (condition) { // code } else // code

• if (condition) { // code } else { // code }

• if condition { // code } else // code

• if (condition) // code else { // code }

How do you write a nested if-else statement in C?

• if(condition1) { if(condition2) { // code if condition1 and condition2 are true } else { // code if condition1 is true and condition2 is false } } else { // code if condition1 is false }

• if(condition1) { // code if condition1 is true } else if(condition2) { // code if condition2 is true }

• if(condition1) { // code if condition1 is true } else { // code if condition2 is true }

• if(condition1 && condition2) { // code if both conditions are true }

What will be the output of the following code: if(x > 10) { printf('Greater'); } else { printf('Smaller'); }?

• Output depends on the value of x.

• Output will always be 'Smaller'.

• Output will always be 'Greater'.

• Output will be 'Greater' if x is less than 10.

Explain how logical operators can be used in an if statement.

• Logical operators are only for mathematical calculations.

• Logical operators can combine multiple conditions in an if statement.

• Logical operators can only be used in loops.

• If statements cannot have multiple conditions.

What is the result of the following code: if(a > 5 && b < 10) { printf('True'); } else { printf('False'); }?

• Always prints 'True'

• Prints 'True' if a is even

• Depends on the values of a and b

• Always prints 'False'

How can you use an if-else statement to check multiple conditions?

• Check conditions using a switch statement instead.

• Use 'if' for all conditions without 'else'.

• Only use 'else' for all conditions.

• Use 'if' for the first condition, 'else if' for subsequent conditions, and 'else' for the default case.

What is the purpose of using nested if-else statements?

• To simplify code by reducing the number of lines.

• To ensure that all conditions are always true.

• To create loops within conditional statements.

• To evaluate multiple conditions and execute different code blocks based on those conditions.

Write a code snippet that demonstrates the use of if-else with logical OR operator.

• if (condition1 || condition2) { // Code to execute if either condition1 or condition2 is true } else { // Code to execute if both conditions are false }

• if (!(condition1 || condition2)) { // Code for both conditions false }

• if (condition1 && condition2) { // Code for both conditions true }

• if (condition1) { // Code for condition1 true } else if (condition2) { // Code for condition2 true }

What happens if the condition in an if statement is false?

• The code inside the if statement is executed.

• The if statement is ignored completely.

• The code inside the if statement is not executed.

• The program crashes immediately.

Can you have an if statement without an else statement? Explain.

• An if statement must always have an else statement.

• You can only use if statements in loops.

• If statements cannot exist without a condition.

• Yes, you can have an if statement without an else statement.