strchr函数_strchr函数 php_strcat函数(3)

脚本如下：

Starting action Action. [MsgId: MMSG-15919]

Action.c(11): groupname=CHANGE [MsgId: MMSG-17999]

Action.c(16): lower case groupname=change [MsgId: MMSG-17999]

运行后在log中看到如下语句：

Action.c(13): The sentence has 18 letters

char *strncat ( char *to_string, const char *from_string, size_t n );

功能：把一个字符串连接到另一个字符串后面。

例子：

在这里，我随便写了两个字符串，用此函数把他们连接起来，并打印出来。

脚本如下：

char str1[]="Cheers is ";

char str2[]="a tester.";

lr_output_message("What can we see?");

lr_output_message("The str1 is %s.",str1);

strncat(str1,str2,20);

lr_output_message("The str1 is %s.",str1);

运行后在log中看到如下语句：

Action.c(9): What can we see?

Action.c(10): The str1 is Cheers is .

Action.c(13): The str1 is Cheers is a tester..

注：我们可以看到，没有连接前的str1是：Cheers is，连接后的字符串是：Zee is a tester。也可以看看strcat函数。

int strncmp ( const char *string1, const char *string2, size_t n );

功能：对比两个字符串的前n位。

例子：

对比两个字符串，并把对比结果打印出来。这里我和上面的strcmp一起写。

脚本如下：

char result;

char str1[]="Cheers is a tester.";

char str2[]="Cheers is a tester.";

char str3[]="Cheers is a tester?";

result = strcmp(str1,str2);

if(result > 0)

lr_output_message("str1 is greater than str2.");

else if(result < 0)

lr_output_message("str1 is less than str2.");

else

lr_output_message("str1 is equal to str2.");

result = strncmp( str1, str3 , 30);

if(result > 0)

lr_output_message("str1 is greater than str3.");

else if(result < 0)

lr_output_message("str1 is less than str3.");

else

lr_output_message("str1 is equal to str3.");

运行后在log中看到如下语句：

Starting iteration 1.

Starting action Action.

Action.c(18): str1 is equal to str2.

Action.c(28): str1 is less than str3.

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