These functions read formatted input from stream according to fmt and any subsequent arguments, returning the number of conversions performed. For ‘file_vscanf’, subsequent arguments are obtained from va.
These functions read formatted input from string (starting at position zero) according to fmt and any subsequent arguments, returning the number of conversions performed. For ‘astr_vscanf’, subsequent arguments are obtained from va.
These functions read formatted input from str according to fmt and any subsequent arguments, returning the number of conversions performed. For ‘s_vscanf’, subsequent arguments are obtained from va.