Scanf prototype in c

int scanf(const char *format, ...)
/*  
	It returns the number of items of the argument list successfully read. 
	If a reading error happens or the end-of-file is reached while reading, 
    the proper indicator is set (feof or ferror) and, if either happens before any 
    data could be successfully read, EOF is returned.	
*/

Source: tutorialspoint.com

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