std::string 杂记

std::string strSubtitle =@"";

 

 if( ! strSubtitle.empty() ) //判断字符串的是否为空

    {

        CCLabelTTF* l = CCLabelTTF::create(strSubtitle.c_str(), "Thonburi", 22);

        addChild(l, 1);

        l->setPosition( ccp(VisibleRect::center().x, VisibleRect::top().y - 60) );

    }    

string的追加

 

       std::string s1 = "hello";

    std::string s2 = "world";

    std::string s3 = s1 + "," + s2 +"!\n";

 CCLog("%s",s3.c_str());

也可以 sprintf("%d.png", i);搞定

string 比较

 

if (s1=="hello") {

        CCLog("一样");

 }

 

string遍历节点

 

 

 for(int i = 0 ; i < s3.size(); i ++){

        CCLog("%c\n",s3[i]);

    }

 

//

 

 int index = str.find("baidu");//查找字符串字母位置

 str.replace(index, 5, "sain");//把规定字符串替换

  CCLog("%s",str.c_str());

//把char 类型转数组 通过","
    char*gs;

    int a[2];

    std::string testString= "1,2,3";

    char *order;

 

    strcpy(gs, testString.c_str());

    order = strtok (gs,",");

    int i=0;

    while(order!=NULL) {

        CCLog( "%s",order );

        int aa= atoi(order);

        CCLog("%d",aa);

        order = strtok(NULL,",");

        a[i]=aa;

         i++;

    }

    CCLog("%d",a[1]);