safearray.h

来自「数据结构ssd5 re3」· C头文件 代码 · 共 54 行

/*
 * 063420 魏政
 */


#ifndef SAFEARRAY_H
#define SAFEARRAY_H

template <typename T>
class safearray {

private:
    T *storage;
    int capacity;

public:
    safearray() : storage(NULL), capacity(0) {} // default constructor

	//构造函数重载
    safearray(int a)
	{
		capacity=a;
        storage=new T[a];
	}
	//析构函数，删除所创建动态数组内存空间
    ~safearray(void) 
	{
		if(storage!=NULL)
		{
			delete [] storage;
			storage=NULL;
		}
	}					

    T& operator[] (int i) throw(out_of_range)
	{
		//如果choice大于10,抛出异常"Index is too high"
		if(i >= capacity)
		{
			throw out_of_range("Index is too high\n");
		}else if(i < 0)//若果choice小于0,抛出异常"Index is below 0"
		{
			throw out_of_range("Index is below 0\n");
		}
		return *(storage+i);
	}
};

#endif