C: Define global array variable that user can declare its size -


i want set global reference of int array, in c language, want initialize inside main function (actually user going declare size). knows how done?

thanks in advance!

declare pointer int global variable , initialize in main using malloc.

/* outside function, it's global variable: */ int *array; size_t array_size;  /* inside main(): */ array_size = user_defined_size; array = malloc( sizeof(int)*array_size); if ( array == null) {     /* exit - memory allocation failed. */ } /* stuff array */ free(array);

if need access global variable module (source file), declare there again using

extern int *array; extern size_t array_size;

or, preferably, declare them extern in header file included in source file uses array, including source defined (to ensure type consistency).


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