Understanding C Conditional Statements

What is the purpose of an if statement in C?

• To declare variables in C.

• To create loops in C.

• The purpose of an if statement in C is to execute code conditionally based on a boolean expression.

• To define a function in C.

How do you write 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 }

What is the syntax for a switch statement in C?

• switch(expression) { case constant1: // statements; default: // statements; }

• switch { case constant1: // statements; }

• switch(expression) { case constant1: // statements; case constant2: // statements; }

• switch(expression) { case constant1: // statements; break; case constant2: // statements; break; default: // statements; }

Explain the use of the conditional (ternary) operator in C.

• The ternary operator can only return boolean values in C.

• The conditional operator is used to define functions in C.

• The conditional (ternary) operator in C is used to evaluate a condition and return one of two values based on the result.

• The conditional operator is used for looping through arrays in C.

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

• The code inside the if statement is executed.

• The program crashes immediately.

• The if statement is ignored completely.

• The code inside the if statement is not executed.

Can you nest if statements in C? Provide an example.

• Nesting if statements is only allowed in C++.

• You cannot use if statements in C.

• if statements can only be used once in a program.

• Example: int x = 10; if (x > 5) { if (x < 15) { printf("x is between 5 and 15\n"); } }

What is the difference between == and = in C?

• Both '=' and '==' are used for assignment.

• '=' checks for equality, and '==' assigns a value.

• The difference is that '=' assigns a value, and '==' checks for equality.

• '==' is used for variable declaration, and '=' is for comparison.

How do you handle multiple conditions in an if statement?

• Only use single conditions in if statements.

• Use logical operators '&&' for 'and' and '||' for 'or' to combine conditions.

• Use '==' to compare multiple conditions.

• Combine conditions using the '!' operator.

What is the role of the default case in a switch statement?

• The default case is mandatory and must always be included in a switch statement.

• The default case is used to define the first case in a switch statement.

• The default case executes when the switch statement is explicitly terminated.

• The default case provides a fallback action when no case matches in a switch statement.

How can you use logical operators in conditional statements?

• Conditional statements cannot use multiple conditions.

• Logical operators are only for mathematical calculations.

• Logical operators can only be used in loops.

• You can use logical operators to combine multiple conditions in conditional statements.