Learning the C-language function of LoadRunner

Learn the difference between LoadRunner C function Action () {/*STRCHR and STRRCHR */* char *strtest1= "Citms Citms"; char *strtest2,*strtest3;// Find the character T in StrTest1, and start intercepting it when the first time you touch T. strtest2= (char *) STRCHR (strTest1, ' t ');  Lr_output_message ("The first occurrence of T:%s", strTest2); Find the character T in StrTest1, and start to intercept it when the first time you touch T. strtest3= (char *) STRRCHR (strTest1, ' t '); Lr_output_message ("The last occurrence of T:%s", STRTEST3); */This code results in: The first occurrence of T:tms Citms the last occurrence of T:tms/*strcpy and strncpy,memcpy the difference */* char * strtest1= "Citms Citms"; Char strtest4[50],strtest5[50]; Copy the contents of the StrTest1 into the strTest4. strcpy (STRTEST4,STRTEST1); Lr_output_message ("%s", STRTEST4); The contents of the StrTest1, from the beginning of the interception of 4 bits, copied into the StrTest5 inside. strncpy (strtest5,strtest1,4); Lr_output_message ("%s", STRTEST5); "StrTest4" in the string represents the end character, so the code below is ABC strcpy (STRTEST4, "abc\0abc");  Lr_output_message ("%s", STRTEST4); strncpy (STRTEST5, "Abc\0abc", 6); Lr_output_message ("%s", STRTEST5); Through the memcpy function, you can identify the character after "\", the result of the following code is//ABC//def memcpy (strTest5, "Abc\0def",7); Lr_output_message ("%s", STRTEST5); Lr_output_message ("%s", strtest5+4); * * */*strcmp and stricmp the difference */* char strtest6[50]= "How old is You?"; Char *strtest7; int result;  Strtest7= "How old is You?"; RESULT=STRCMP (STRTEST6,STRTEST7);  Lr_output_message ("%d", result); RESULT=STRICMP (STRTEST6,STRTEST7); Lr_output_message ("%d", result); Returns the number 1, the previous string is greater than the next//return number 0, for the previous string equals the next//return-1, for the previous string is less than the next//strcmp is a case-sensitive comparison, STRICMP is a case-insensitive comparison */* The difference between strcat and strncat */* char strtest8[50];  Char *strtest9= "is lilei.";  strcpy (StrTest8, "My name"); strcat (STRTEST8,STRTEST9);  Lr_output_message ("%s", STRTEST8); Strncat (strtest8,strtest9,5); Lr_output_message ("%s", STRTEST8); */* Char *stringtest= "ABC\0ABC"; int stringlength=0;    Lr_output_message ("%s", stringtest); Stringlength=strlen (stringtest); Lr_output_message ("%d", stringlength);  */return 0;}

if (Strstr (lr_eval_string ("{response}"), "OK")! = NULL)  {//pass}else{//fail}

Learning the C-language function of LoadRunner