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在下面的示例中，我使用指向类mySession中结构的指针，并通过手动分配和解除分配内存来填充和使用两种不同的方法。仅仅通过使用智能指针，怎么可能做和我在这里做的一样的事情呢？我根本不知道如何使用智能指针。请通过更改使用智能指针的代码来显示它。谢谢你。OpenStackSessionOpenStack

请注意：我必须在不使用命名空间 std 和库字符串的情况下执行此操作。我不知道它对智能指针是否重要，但我认为值得告知。

#include <string.h>
#include <stdio.h>
#include <stdlib.h>

struct OpenStackSession
{
    int limit;
    char prefix[256];
    char marker[256];
    char delimiter[256];
    char format[256];
    char path[256];
};

class OpenStack
{

public:
    OpenStackSession* mySession;
    void requestbegin(const char*);
    void requestpayload();
};

void OpenStack::requestbegin(const char* url)
{
    mySession=new OpenStackSession();
    char urlCopy[2000];
    strcpy(urlCopy,url);
    urlCopy[strlen(url)]='\0';
    char* questionMarkPointer=strchr(urlCopy,'?');
    int questionMarkPosition=questionMarkPointer-urlCopy;
    char query[2000];
    strncpy(query,urlCopy+questionMarkPosition+1,strlen(urlCopy)-questionMarkPosition-1);
    query[strlen(urlCopy)-questionMarkPosition-1]='\0';
    int lenForEqSign=0;
    int plusAndSignPosition=0;
    int andSignPosition=0;
    bool check=true;
    while(check == true)
    {

        char* equalSignPointer=strchr(query+plusAndSignPosition,'=');
        int lenForEqSign=equalSignPointer-query;
        char* andSignPointer=strchr(query+plusAndSignPosition,'&');
        if(andSignPointer!=NULL)
        {
            andSignPosition=andSignPointer-query;
        }
        else
        {
            andSignPosition = strlen(query);
            check=false;
        }
        if(strncmp(query+plusAndSignPosition,"limit",5) == 0)
        {
            char temp[256];
            strncpy(temp,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            temp[andSignPosition-lenForEqSign-1]='\0';
            mySession->limit=atoi(temp);
        }
        else if(strncmp(query+plusAndSignPosition,"prefix",6) == 0)
        {
            strncpy(mySession->prefix,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            mySession->prefix[andSignPosition-lenForEqSign-1]='\0';
        }
        else if(strncmp(query+plusAndSignPosition,"marker",6) == 0)
        {

            strncpy(mySession->marker,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            mySession->marker[andSignPosition-lenForEqSign-1]='\0';
        }
        else if(strncmp(query+plusAndSignPosition,"delimiter",9) == 0)
        {

            strncpy(mySession->delimiter,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            mySession->delimiter[andSignPosition-lenForEqSign-1]='\0';
        }
        else if(strncmp(query+plusAndSignPosition,"path",4) == 0)
        {
            strncpy(mySession->path,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            mySession->path[andSignPosition-lenForEqSign-1]='\0';   

        }
        else if(strncmp(query+plusAndSignPosition,"format",6) == 0)
        {
            strncpy(mySession->format,query+lenForEqSign+1,andSignPosition-lenForEqSign-1);
            mySession->format[andSignPosition-lenForEqSign-1]='\0'; 

        }
        plusAndSignPosition=andSignPosition+1;  
    }
}

void OpenStack::requestpayload()
{
    printf("Limit %d\n",mySession->limit);
    printf("Prefix %s\n",mySession->prefix);
    printf("Marker %s\n",mySession->marker);
    printf("Delimiter %s\n",mySession->delimiter);
    printf("Path %s\n",mySession->path);
    printf("Format %s\n",mySession->format);
    delete mySession;
}

void main()
{
    const char* url="/v1/AUTH_abb52a71-fc76-489b-b56b-732b66bf50b1/images/a/plusAndSignPosition/c/andSignPosition/e?limit=100000&prefix=this-is-prefixdelimiter&marker={}marker&path=/temp/path/marko/it&delimiter=/delimiter&format=xmlformat"  ;
    OpenStack open;
    open.requestbegin(url);
    open.requestpayload();
}
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