Syntax rules: rules that specify which statements (instructions) are legal or valid

Write a C++ program to ask the user to input the electricity amount and calculate the total electricity bill by using the selection control structures according to the given condition: Round the numbers and keep only 2 decimal values, and use compound operators. From 0 to 10 electricity amount, multiply by 0.40 and display “The total electricity bill is =” From 11 to 20 electricity amount, multiply by 0.50 and display “The total electricity bill is =” From 21 to 30 electricity amount, multiply by 0.60 and display “The total electricity bill is =” Anything else display ” Invalid electricity data”

You can have multiple main() functions in a C++ program.

 Semantic rules: rules that specify which statements (instructions) are legal or valid

The C++ Standard Library’s iostream library is used exclusively for input operations

All variables must be initialized before they are used, and necessarily during declaration

In which of the following situations (if any) are police allowed to enter someone’s home to make an arrest without a warrant?

Two cars approach each other along streets that meet at a right angle.  They collide and stick together at the intersection.  If the smaller car has a mass of 1300 kg and is moving at 2.25 m/s South when it collides with the larger 1700 kg car which is traveling at 4.50 m/s East.  What is the speed and direction of the combined wreckage immediately after the collision?   Speed =   Direction = degrees from +x axis

The velocity of a pitched ball (150 g) has a magnitude of 40.0 m/s.  After striking the bat the batted ball’s velocity is 59.0 m/s in the opposite direction. a) Find the magnitude of the change in momentum of the ball.     b) What is the magnitude of the Impulse applied to the ball by the bat?     c) The ball is in contact with the bat for 1.5 ms.  What is the average force applied by the bat on the ball?     d) The mass of an MBA bat is 0.940 kg.  If the bat is in contact with the ball for 1.5 ms, what is the magnitude of the force applied by the ball on the bat.  

List 3 categories of drugs of abuse that are routinely measured.