《电路计算C++与MATLAB》学习笔记（一）

 #include "stdafx.h"

    
 #include <iostream>//源程序采用#include <iostream.h>
    
 using namespace std;
    
 #include <stdlib.h>
    
 class vector {
    
 	int size; float *p;
    
 public:
    
 	int ub;//上界（upper bound）=size-1
    
 	vector() {
    
 		size = 10;
    
 		p = new float[size];//开辟大小为size的实数空间，并用指针p指向它
    
 		ub = size - 1;}
    
 	vector(int n)
    
 	{
    
 		if (n < 0) { cerr << "illegal vector size" << n << "\n"; exit(1); }
    
 		size = n; p = new float[size]; ub = size - 1;
    
 	}/*vector(n)*/
    
 	~vector() { delete p; }