C++类对象和实例创建

类只是一个模板（Template），编译后不占用内存空间，所以在定义类时不能对成员变量进行初始化，因为没有地方存储数据。只有在创建对象以后才会给成员变量分配内存，这个时候就可以赋值了。

#include <iostream>
#include <stdlib.h>
using namespace std;

class Solution{

public:

	int age;
	char *name;
	string like;
	int dump(int number){
		
		if(number <= 0){
			return 0;
		}
		if(number <=2 ){

			return number;
		
		}
		return dump(number - 1 ) + dump(number - 2 );
	}

};

int main(int argc,char *argv[]){

	Solution solution;
	
	cout<< "dump( " << argv[1] <<") = " << solution.dump(atoi(argv[1])) << endl;
	
	solution.age = 10;
	char temp[] = "xiaoming";
	solution.name = temp;
	solution.like = "play game..";

	cout<< "age = " << solution.age << " name = " << solution.name << " like = " << solution.like << endl;
	

	Solution *s = new Solution;
	s->age = 10;
    cout<< "age = " << s->age << " name = " << s->name << " like = " << s->like << endl;

	cout<<endl;

	delete s;
}


  

 

  
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./a.out  5
dump( 5) = 8
age = 10 name = xiaoming like = play game..
age = 10 name = (base) 

  

 

  
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delete p和delete[] p的区别

文章来源: positive.blog.csdn.net，作者：墨理学AI，版权归原作者所有，如需转载，请联系作者。

原文链接：positive.blog.csdn.net/article/details/114691653