This C tutorial explains how to use the #define preprocessor directive in the C language. In the C Programming Language, the #define directive allows the definition of macros within your source code. These macro definitions allow constant values to be declared for use throughout your code. Macro definitions are not variables and cannot be changed by your program code like variables.
Price Ceilings. If the price ceiling is above the market price, then there is no direct effect. If the price ceiling is set below the market price, then a shortage is created; the quantity demanded will exceed the quantity supplied. The shortage may be resolved in many ways.
Why does quantity supplied increase when price increases? A: The quantity of a particular good supplied in a market increases as price goes up because suppliers have an increased interest in producing goods to generate higher amounts of revenue. This is a basic principle of the law of supply and demand. Continue Reading.