strlen:获取字符串的长度

char str[20]="容我想想";

int len;

len = strlen(str);

lr_output_message("str的长度=%d",len);

Action.c(9): str的长度=8

strupr:将小写字母转化为大写字母

char str[20] ="Welcome to the HP LoadRunner Online Function Reference";

char *str1 = NULL;

str1 = (char *)strupr(str);

lr_output_message("str的内容转化为大写为%s",str1);

strlwr:将小写字母转化为大写字母

char str[20] ="RONGWOXIANGXIANG";

char *str1 = NULL;

lr_output_message("str的内容转化为小写为%s",strlwr(str));

strrchr：在字符串中查找指定字符最后一次出现

char *str="Welcome to the HP LoadRunner Online Function Reference";

char *str1;

str1 = (char *)strrchr(str,‘c‘);

lr_output_message("c 最后一次出现时在%s",str1);

strchr：在字符串中查找字符第一次出现

char *str="Welcome to the HP LoadRunner Online Function Reference";

char *str1;

str1 = (char *)strchr(str,‘c‘);

lr_output_message("c第一次出现是在%s",str1);

strncpy：拷贝指定长度的字符串

char str[100]="容我想想老师之性能测试系列培训课程";

char str1[100];

strncpy(str1,str,8);

lr_output_message("str的值为%s",str1);

strcpy：拷贝字符串

char str[100]="容我想想老师之性能测试系列培训课程";

char str1[100];

strcpy(str1,str);

lr_output_message("str的值为%s",str1);

strnicmp：不区分大小写比较指定长度的字符串

char str[100] ="Welcome to the HP LoadRunner Online Function Reference";

char str1[100]="WELCOME TO THE HP LOADRUNNER ONLINE FUNCTION REFERENCE";

int num;

num = strnicmp(str,str1,10);

if(num == 0)

lr_output_message("str == str1");

else if(num > 0)

        lr_output_message("str > str1");

else if(num < 0)

lr_output_message("str <  str1");  

stricmp：不区分大小写比较字符串

char str[100] ="Welcome to the HP LoadRunner Online Function Reference";

char str1[100]="WELCOME TO THE HP LOADRUNNER ONLINE FUNCTION REFERENCE";

int num;

num = stricmp(str,str1);

if(num == 0)

lr_output_message("str == str1");

else if(num > 0)

        lr_output_message("str > str1");

else if(num < 0)

lr_output_message("str <  str1"); 

strncmp:比较指定长度字符串

   char str[100] = "Welcome to the HP LoadRunner Online Function Reference";

   char str1[100]= "Welcome TO THE HP LOADRUNNER ONLINE FUNCTION REFERENCE";

   int num;

   num = strncmp(str,str1,8);

  if(num == 0)

 lr_output_message("str == str1");

  else if(num > 0)

 lr_output_message("str > str1");

   else if(num < 0)

 lr_output_message("str < str1");

strncmp:字符串比较

char str[100] = "Welcome to the HP LoadRunner Online Function Reference";

char str1[100]= "Welcome TO THE HP LOADRUNNER ONLINE FUNCTION REFERENCE";

int num;

num = strcmp(str,str1);

if(num == 0)

 lr_output_message("str == str1");

  else if(num > 0)

 lr_output_message("str > str1");

   else if(num < 0)

 lr_output_message("str < str1");

 strcat：拼接字符串

char str[100]="容我想想";

char str1[100]="老师之性能测试系列培训课程";

char *str2;

str2 = (char *)strcat(str,str1);

lr_output_message("str1的值为%s",str2);

strncat：拼接指定长度字符换

char str[100]="容我想想";

char str1[100]="老师之性能测试系列培训课程";

char *str2;

str2 = (char *)strncat(str,str1,22);

lr_output_message("str1的值为%s",str2);

 memcpy：拷贝指定长度的字符串

char str[100]="容我想想老师之性能测试系列培训课程";

char str1[100]="";

memcpy(str1,str,30);

lr_output_message("str1的值为%s",str1);

memcmp：比较指定长度的字符串

char str[100]="容我想想老师之性能测试系列培训课程TEST";

char str1[100]="容我想想老师之性能测试系列培训课程";

int num;

num = memcmp(str1,str,34);

if(num == 0)

 lr_output_message("str == str1");

  else if(num > 0)

 lr_output_message("str > str1");

   else if(num < 0)

 lr_output_message("str < str1");