Zilog ZUSBOPTS Bedienungsanleitung PDF herunterladen (Seite 447)

100

101

UM017105-0511 Standard Functions

Zilog Developer Studio II – ZNEO™

User Manual

419

gets

Reads characters from the input stream into the array pointed to by s, until end-of-file is

encountered or a new-line character is read. The new-line character is discarded, and a null

character is written immediately after the last character read into the array.

Synopsis

#include <stdio.h>

char *gets(char *s);

Returns

The value of s, if successful. If a read error occurs during the operation, the array contents

are indeterminate, and a null pointer is returned.

Example

char *r;

char buf [80];

r=gets(buf);

if (r==NULL)

/*No input*/

The UART must be initialized using the Zilog init_uart() function. See the init_uart

command on page 182.

isalnum

Tests for any character for which isalpha or isdigit is true.

Synopsis

include <ctype.h> 

int isalnum(int c);

Example

int r;

char c='a';

r=isalnum(c);

Note:

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