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Related Modules:
Description:
Defines the command parsing option.
int* option::flag
Description:
Determines the returned value of the getopt() function. If flag is NULL, the getopt() function returns the val value that matches the option. If flag is not NULL, assign the val value to the memory to which flag points, and set the returned value to 0.
int option::has_arg
Description:
has_arg has three values. 0 indicates that the argument is not followed by an argument value, 1 indicates that the argument must be followed by an argument value, and 2 indicates that the argument can be followed or not followed by an argument value.
const char* option::name
Description:
Long argument name
int option::val
Description:
The returned value is determined by flag.
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