这个程序编译没错误,但运行有一点小错误,希望大家帮我一把。
这个题的题目是这样的:
建立一个二维数组类Douary,使该类中有以下数据成员、成员函数及友员函数,完成矩阵的输入、输出、加、减、相等判断等操作。
- C/C++ code
#include <iostream.h>class Douary{public: Douary(int m, int n);//构造函数:用于建立动态数组存放m行n列的二维数组(矩阵)元素,并将该数组元素初始化为 ~Douary(); //析构函数:用于释放动态数组所占用的存储空间。 Douary(const Douary &d);//复制构造函数 //此处增加一个复制构造函数 friend istream &operator>>(istream &input, Douary &d);//重载运算符“>>”输入二维数组,其中d为Dousry类对象; friend ostream &operator<<(ostream &output, Douary &d);//重载运算符“<<”以m行n列矩阵的形式输出二维数组,其中d为Douary类对象。 friend Douary operator+(const Douary &d1,const Douary &d2);//两个矩阵相加,规则:对应位置上的元素相加 friend Douary operator-(const Douary &d1,const Douary &d2);//两个矩阵相减,规则:对应位置上的元素相减 bool operator==(const Douary &d);//判断两个矩阵是否相等,即对应位置上的所有元素是否相等private: int * Array; //Array 为动态数组指针。 int row; //row 为二维数组的行数。 int col; //col 为二维数组的列数。};Douary::Douary(int m, int n)//构造函数:用于建立动态数组存放m行n列的二维数组(矩阵)元素,并将该数组元素初始化为 { int s; row=m; col=n; s=row*col; if((m|n) != 0 ) { Array=new int[s]; for (int i=0;i<s;i++) { *(Array+i) = 0; } } else Array = NULL; } Douary::Douary(const Douary &d) { row=d.row; col=d.col; int s=row*col; Array = new int[s]; for(int j=0; j<s; ++j) Array[j]=d.Array[j]; } Douary::~Douary() { if (Array != NULL) { for (int i=0;i<(row*col);i++) { delete (Array+i); } delete []Array; //Array = NULL; } } istream &operator>>(istream &input, Douary &d)//重载运算符“>>”输入二维数组,其中d为Dousry类对象; { int s; s=d.row*d.col; //input>>d.row >>d.col ; if((d.row|d.col) !=0) { int i; for (i=0;i<s;i++) { input>>*(d.Array+i); } } else { cout<<"您输入的数据有误!"<<endl; } return input; }ostream &operator<<(ostream &output, Douary &d)//重载运算符“<<”以m行n列矩阵的形式输出二维数组,其中d为Douary类对象。 { //output<<d.row <<'/'<<d.col <<endl; for(int i=0; i<d.row; ++i) { for(int j=0; j<d.col; ++j) cout<<*(d.Array+i*d.col+j)<<"\t"; cout<<endl; } cout<<endl; return output; } Douary operator+(const Douary &d1,const Douary &d2)//两个矩阵相加,规则:对应位置上的元素相加 { Douary d(d1.row,d1.col); if (d1.row==d2.row && d1.col==d2.col) { int s=d1.row*d1.col; int j; for(j=0;j<s;++j) { *(d.Array+j) = *(d1.Array+j)-*(d2.Array+j); } } else { cout<<"d1和d2的行数与列数不相等!"<<endl; } return d; } Douary operator-(const Douary &d1,const Douary &d2)//两个矩阵相减,规则:对应位置上的元素相减 { Douary d(d1.row,d1.col); if (d1.row==d2.row && d1.col==d2.col) { int s=d1.row*d1.col; int j; for(j=0;j<s;++j) { *(d.Array+j) = *(d1.Array+j)-*(d2.Array+j); } } else { cout<<"d1和d2的行数与列数不相等!"<<endl; } return d; } bool Douary::operator==(const Douary &d)//判断两个矩阵是否相等,即对应位置上的所有元素是否相等 { bool bRet = false; if (row==d.row && col==d.col) { int j; int s=row*col; for(j=0;j<s;++j) if(*(d.Array+j)!=*(Array+j)) return false; bRet = true; } return bRet; } int main(){ Douary d1(2,3),d2(2,3); cout<<"输入d1(2,3):"<<endl; cin>>d1; cout<<"输入d2(2,3):"<<endl; cin>>d2; cout<<"d1="<<endl; cout<<d1; cout<<"d2="<<endl; cout<<d2; cout<<"d1+d2="<<endl; cout<<(d1+d2); cout<<"d1-d2="<<endl; cout<<(d1-d2); cout<<"d1"<<((d1==d2)?"==":"!=")<<"d2"<<endl; return 0;}
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没释放,也会运行出错啊,唉,找了好久
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唉,找了半天没看析构函数,
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已经解决了??来迟了啊。