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Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Beginner
Nov 19, 1998

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Integer Affixes

You can use affixes to help the compiler figure out the correct type of a hard coded integer. The letter L affixed to a number indicates a long integer and the letter U indicates an unsigned type:
 
#define MAX 1000L  // tells the compiler to store constant as a long rather than an int
#define MAX 1000U  // tells the compiler to store constant as an unsigned int 
These affixes can be used together:
 
#define MAX 1000UL // unsigned long
They are also case insensitive:
 
#define MAX 1000ul // also unsigned long 
Danny Kalev
 
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