String--getvaluebykey () synthetic Exercises

Topic:

Key-value pairs ("key = Valude") strings, which are often used in development;
Requirement 1: Please define an interface for you to obtain valude;40 points according to key
Requirement 2: Write test cases. 30 min
Requirement 3: The key value pair may have more than n spaces in the middle, please remove the space 30 points
Note: The key-value pair string format might look like this:

"Key1 = Valude1"
"Key2 = Valude2
"Key3 = Valude3"
"Key4 = Valude4"
"Key5 ="
"Key6 ="
"Key7 ="

1#include <stdio.h>2#include <stdlib.h>3#include <string.h>4#include <ctype.h>5 6 intTRIMSPACESTR (Char*p,Char*buf);7 intGetkeybyvalue (Char*pkeyvalue,Char*pkey,Char*pValue);8 9 intMain ()Ten { One     intRET =0; A     CharKeyvalude[] ="Key1 = Valude1"; -     CharKey[] ="Key1"; -     Charvalude[1024x768] =  {0}; the  -RET =Getkeybyvalue (Keyvalude, Key, valude); -  -     if(Ret! =0) +     { -printf"func getkeybyvalue () err:%d \ n", ret); +         returnret; A     } atprintf"valude:%s \ n", valude); -  -System"Pause"); -     return 0; -  - } in  - //string two-block model, the main function allocates memory (in), remove the extra space before and after the string to intTRIMSPACESTR (Char*p,Char*buf) + { -     intRV =0; the     Char*str =p; *     inti =0;//Search pointer variables, starting at the head of the string $     intj = strlen (str)-1;//search for pointer variables, starting at the end of the stringPanax Notoginseng     intLen =0;//valid length of string -      the     if(Str==null | | buf==NULL) +     { ARV =-1; theprintf"Function trimspacestr () Check (Str==null | | buf==null) Error:%d", RV); +         returnRV; -     } $      $      while(Isspace (Str[i]) && i<j) -     { -i++; the     } -     Wuyi      while(Isspace (Str[j]) && j>=0) the     { -j--; Wu     } -      AboutLen = j-i+1; $      -strncpy (BUF, str+I, Len); -      -Buf[len] =' /'; A     returnRV; + } the  - intGetkeybyvalue (Char*pkeyvalue,Char*pkey,Char*pValue) $ { the     //1. Determine if there is a key value passed in the parameter the     Char*temp =Pkeyvalue; the     intRV =0; the      -temp =strstr (Pkeyvalue, PKey); in     if(temp==NULL) the     { theRV =-1; Aboutprintf"func getkeybyvalue () err:%d find no keyword pkey \ n", RV); the         returnRV; the     } theTemp = temp + strlen (pKey);//The secondary pointer points to the Y-letter of key at this point, and prepares for the next search +      -     //2. Then look for the position of = thetemp = strstr (temp,"=");//Search starting at current temp location =Bayi     if(temp = =NULL) the     { theRV =-2; -printf"func getkeybyvalue () err:%d Lookup not = \ n", RV); -         returnRV; the     } theTemp = temp +1;//The secondary pointer points at this point = back one, preparing for the next search the      the     //3. Extract Value -RV =trimspacestr (temp, pValue); the     if(RV! =0) the     { theprintf"func trimSpaceStr03 () err:%d \ n", RV);94         returnRV; the     } the     returnRV; the}

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String--getvaluebykey () synthetic Exercises