07. Variable, Variable name rules | Khmer Computer Knowledge смотреть онлайн

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this tutorial we will study about how to declare variable and rules to name variable in C Programming like below:
How to declare variable:
datatype variableName;
datatype variableName1, variableName2,...;
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Datatype: char, short, long, int, float, double, signed, unsigned
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- Variables name have to start with character(Capital[A-Z] or Small[a-z] Letters) or underscore(_)
- Blanks(Tab or Space) & Commas are not allowed
- Variables name are case sensitive
- Can not use Special Symbols(!@#$%^&*....) only underscore(_) are allowed
- Can not start with numbers but can be next to letter
- Can not use the same as C programming keywords(also called as Reserved words):
auto double int struct
break else long switch
case enum register typedef
char extern return union
const float short unsigned
continue for signed void
default goto sizeof volatile
do if static while

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