Quick Answer: Whats The Difference Between IF And ELSE IF?

What is the difference between a while loop and an if statement what are the similarities?

4 Answers.

An if statement checks if an expression is true or false, and then runs the code inside the statement only if it is true.

A while statement is a loop.

Basically, it continues to execute the code in the while statement for however long the expression is true..

Do I need else after ELSE IF?

4 Answers. The ending else is not mandatory. As for whether it is needed, it depends on what you want to achieve. The trailing else clause will execute when none of the specified conditions is true.

What does && mean in Java?

logical&& is logical and. && combines two boolean values and returns a boolean which is true if and only if both of its operands are true. For instance boolean b; b = 3 > 2 && 5 < 7; // b is true b = 2 > 3 && 5 < 7; // b is now false. || is logical or.

What’s the difference between if and else if?

With the if statement, a program will execute the true code block or do nothing. With the if/else statement, the program will execute either the true code block or the false code block so something is always executed with an if/else statement.

What does else if mean in Java?

Java has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true. Use else to specify a block of code to be executed, if the same condition is false.

What is if else if else statement?

if statement – executes some code if one condition is true. if…else statement – executes some code if a condition is true and another code if that condition is false. if… elseif…else statement – executes different codes for more than two conditions.

Can you call a method in an if statement?

3 Answers. It isn’t bad practice to call a method inside an if/else. Its fine especially when it returns a value you only need that once. … If your program behaves differently when accessing a field than when executing a method that computes the same value, then you should probably fix your method.

What does == mean in Java?

equality operator”==” or equality operator in Java is a binary operator provided by Java programming language and used to compare primitives and objects. … so “==” operator will return true only if two object reference it is comparing represent exactly same object otherwise “==” will return false.

What is the meaning of else if?

Updated: 06/30/2019 by Computer Hope. Alternatively referred to as elsif, else if is a conditional statement performed after an if statement that, if true, performs a function.

What does if else do?

The if/else statement executes a block of code if a specified condition is true. If the condition is false, another block of code can be executed. The if/else statement is a part of JavaScript’s “Conditional” Statements, which are used to perform different actions based on different conditions.

What are the 2 types of iteration?

There are two types of iteration: Count-controlled loops – used for iterating steps a specific number of times. It is used when the number of iterations to take place is already known.

What is the difference between Elif and if?

The elif is short for else if. It allows us to check for multiple expressions. If the condition for if is False , it checks the condition of the next elif block and so on. If all the conditions are False , the body of else is executed.

How many times can you use else if?

There isn’t a limit to the number of if statements. The issue is that one of the previous if statements catches the case you’re testing. Go through each if statements for the case your testing and see if it’s beging caught by a previous one. This happens because your else if(txtVal.

What is nested IF statement?

A nested if in C is an if statement that is the target of another if statement. Nested if statements means an if statement inside another if statement. Yes, both C and C++ allows us to nested if statements within if statements, i.e, we can place an if statement inside another if statement.

What does || mean in Java?

|| operator in Java || is a type of Logical Operator and is read as “OR OR” or “Logical OR“. This operator is used to perform “logical OR” operation, i.e. the function similar to OR gate in digital electronics.