C++ LANGUAGE INITIALIZING LOCAL AND GLOBAL VARIABLES PAGE 22

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C++ LANGUAGE INITIALIZING LOCAL AND GLOBAL VARIABLES

Initializing Local and Global Variables 


When a local variable is defined, it is not initialized by the system, 
you must initialize it yourself. Global variables are initialized 
automatically by the system when you define them as follows: 

Initializer 

int             0 
char          '\0' 
float           0 
double          0 
pointer         NULL 


It is a good programming practice to initialize variables properly, 
otherwise sometimes program would produce unexpected result.