This count can match the expected number of items or be less (even zero) in the case of a matching failure. On success, the function returns the number of items in the argument list successfully filled. Additional arguments are ignored by the function. There should be at least as many of these arguments as the number of values stored by the format specifiers. (additional arguments) Depending on the format string, the function may expect a sequence of additional arguments, each containing a pointer to allocated storage where the interpretation of the extracted characters is stored with the appropriate type. ![]() format C string that contains a format string that follows the same specifications as format in scanf (see scanf for details). Parameters s C string that the function processes as its source to retrieve the data. ![]() The additional arguments should point to already allocated objects of the type specified by their corresponding format specifier within the format string. Reads data from s and stores them according to parameter format into the locations given by the additional arguments, as if scanf was used, but reading from s instead of the standard input ( stdin).
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