Complete hexconvert.

README.md

@@ -32,6 +32,7 @@
 
 
 > * Ver 2.0 重构了部分方法和文件结构
+* ver 2.1 添加了完整的进制转换系统
 
 
 

Stack.h

@@ -0,0 +1,76 @@
+#ifndef STACK_H_
+#define STACK_H_
+
+#define DEFAULT_CAPACITY 3
+typedef int Rank;
+
+template <typename T>
+class Stack
+{
+private:
+	T *_elem;
+	Rank _size;
+	Rank _capacity;
+public:
+	Stack(int n = 0,T ele = 0){
+		_elem = new T[_capacity = DEFAULT_CAPACITY << 1];
+		for(_size = 0;_size < n;_size++)
+			_elem[_size] = ele;
+		expand();
+	};
+
+	~Stack(){delete [] _elem;};
+
+	void expand();
+	void shrink();
+	bool empty(){return (_size == 0);}
+	Rank size(){return _size;}
+	void push(T const&e);
+	T pop();
+	T & top();
+
+};
+
+
+template <typename T>
+void Stack<T>::expand(){
+	if(_size < _capacity) return;
+	if(_capacity < DEFAULT_CAPACITY) _capacity = DEFAULT_CAPACITY;
+	T *oldelem = _elem;
+	_elem = new T[_capacity <<= 1];
+	for(int i = 0;i < _size; ++i){
+		_elem[i] = oldelem[i];
+	}
+	delete [] oldelem;
+}
+
+template <typename T>
+void Stack<T>::shrink(){
+	if(_capacity < DEFAULT_CAPACITY << 1) return;
+	if(_size << 2 > _capacity) return;
+	T *oldelem = _elem;
+	_elem = new T[_capacity >>= 1];
+	for(int i = 0;i < _size; ++i){
+		_elem[i] = oldelem[i];
+	}
+	delete [] oldelem;
+
+}
+
+template <typename T>
+void Stack<T>::push(T const&e){
+	_elem[_size++] = e;
+}
+
+template <typename T>
+T Stack<T>::pop(){
+	shrink();
+	return _elem[_size-- - 1];
+}
+
+template <typename T>
+T & Stack<T>::top(){
+	return _elem[_size - 1];
+}
+
+#endif

numsys.cpp

@@ -1,56 +1,94 @@
 #include <cmath>
+#include <string>
 #include <iostream>
+#include <cstring>
+#include <cstdio>
+#include <cstdlib>
+#include <cmath>
+#include <algorithm>
+#include "Stack.h"
+
 
 #ifndef EPS
-	#define EPS 0.0001
+	#define EPS 0.000001
 #endif
 
 using namespace std;
 
+static char digit[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
+static char num_dig[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
 
-double convert_to_R(double num,double R)
-{
-	int num_int = (int)floor(num);
-	double num_flo = num - num_int;
-	double ans;
-	for(int j = 0;num_int != 0;++j)
-	{
-		ans = ans + pow(10,j) * floor(fmod(num_int,R));
-		num_int = (int) (num_int / R);
-		//if (num_int == 0) break;
-	}
-	double num_flo_flo;
-	for(int j = 1;num_flo_flo < EPS;++j)
-	{
-		ans += pow(10,-j)*(floor(num_flo*R));
-		num_flo *= R;
-		num_flo_flo = num_flo - floor(num_flo);
-		//if (num_int == 0) break;;
-	}
-	return ans;
-
+string upper(string str){
+    transform(str.begin(), str.end(), str.begin(), ::toupper);  
+    return str;
+}
+int convert_to_10(string num,int R1){
+    int ans = 0;
+    num = upper(num);
+    char *pha = (char *)num.c_str();
+    char *p = pha;
+    int i = 0;
+    for (p = pha + num.size() - 1; p != pha - 1; --p)
+    {
+        for (int j = 0; j < 16; ++j)
+        {
+            if(*p == digit[j])
+                ans += num_dig[j] * pow(R1 , i);
+        }
+        i++;
+    }
+    return ans; 
 }
 
-double numconvert(double num,double R1,double R2)
+string convert(string num,int R1,int R2)
 {
-	if (R1 == 10)  return convert_to_R(num,R2);
-	return 0;    //Coding
 
+	int number;
+    Stack <char> answer;
+	number =  convert_to_10(num,R1);
+    cout << "Notes:" << number << "(10)" << endl;
+    while(number != 0){
+        answer.push(digit[number % R2]);
+        number = number / R2;
+	}
+    char *str = new char[answer.size()];
+    for (int i = 0;!answer.empty(); ++i)
+    {
+        str[i] = answer.pop();
+    }
+    string op = str;
+    return op;
 }
 
 void Numsys()
 {
-    double former,later,r1,r2;
+    int r1,r2;
+    string former;
+    string later;
+
     do
     {
         cout << "Input number and R1:" ;
-        cin >> former;
-        if (former == 0) break;
+ 		cin >> former;
+ 		if(former == "q") break;
         cin >> r1;
+        if (r1 == 0) {
+        	cout << "R1 shouldn't be 0." << endl;
+        	continue;
+        }
         cout << "To R2:";
         cin >> r2;
-        later = numconvert(former,r1,r2);
-        cout << "The anwser is:" << later << "(" << r2 << ")" << endl;
-        cout << "0 to quit." << endl;
-    }while (former != 0);
+        if (r2 == 0) {
+        	cout << "R2 shouldn't be 0." << endl;
+        	continue;
+        }
+        else if(r2 ==  10){
+            cout << "The answer is:" << convert_to_10(former,r1) << "(" << r2 << ")" << endl;
+        }
+        else {
+            later = convert(former,r1,r2);
+            cout << "The answer is:" << later << "(" << r2 << ")" << endl;
+        }
+        cout << "q to quit." << endl;
+    }while (former != "q");
 }