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标题: 复数问题~ [打印本页]

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作者: 若叶花吹雪    时间: 2009-11-4 00:24
标题: 复数问题~
头文件:
#ifndef COMPLEX_H_
#define COMPLEX_H_
class Complex0
{
private:
double real;
double imaginary;
public:
//construction
Complex0();
Complex0( double rea = 0.0, double ima = 0.0 );
~Complex0();
// set real,imag from coordinate.
void setReal( double rea );
void setImag( double ima );
Complex0 operator+( const Complex0 &a );
Complex0 operator-( const Complex0 &a );
Complex0 operator*( const Complex0 &a );
Complex0 operator*( double m );
}
#endif

函数实现:
#include <iostream>
using namespace std;
#include "complex.h"
Complex0::Complex0()
{
real = 0.0;
imaginary = 0.0;
}
Complex0::Complex0( double rea , double ima )
{
real = real;
imaginary = ima;
}
Complex0::~Complex0()
{
cout << "Bye1" << endl;
}
// set real,imag from coordinate.
void Complex0::setReal( double rea )
{
real = rea;
}
void Complex0::setImag( double ima )
{
imaginary = ima;
}
Complex0 Complex0::operator+( const Complex0 &a )
{
Complex0 ccc;
ccc.real = real + a.real;
ccc.imaginary = imaginary + a.imaginary;
return ccc;
}
Complex0 Complex0::operator-( const Complex0 &a )
{
Complex0 ccc;
ccc.real = real - a.real;
ccc.imaginary = imaginary - a.imaginary;
return ccc;
}
Complex0 Complex0::operator*( const Complex0 &a )
{
Complex0　ccc;
ccc.real = real * a.real - imaginary * a.imaginary;
ccc.imaginary = real * a.imaginary + imaginary * a.real;
return ccc;
}
Complex0 Complex0::operator*( double m )
{
Complex0 ccc;
ccc.real = m * real;
ccc.imaginary = m * imaginary;
return ccc;
}

主函数:
#include <iostream>
using namespace std;
#include "complex.h"
int main (void)
{
Complex0 a( 3.0, 4.0 );
Complex0 c;
cout << "Enter a complex number (q to quit )";
while( cin >> c )
{
cout << "c is "<< c << endl;
cout << "complex conjugate is " << -c << endl;
cout << "a is "<< a << endl;
cout <<"a + c = "<<a + c << endl;
cout << "Enter a complex number (q to quit)";
}
cout << "Bye`!";
return 0;
}

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作者: 王者风范    时间: 2009-11-4 00:24
修改不出来,还请楼下的帮忙,

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作者: $星辰    时间: 2009-11-4 00:24
Complex0();
Complex0( double rea = 0.0, double ima = 0.0 );
都是默认构造函数。


Complex0 Complex0::operator*( const Complex0 &a )
{
Complex0　ccc; 有一个宽字符


还有，使用了<<, >>, 一元-操作符但是没有重载他们。

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作者: 青松    时间: 2009-11-4 00:24
什么叫做宽字符?

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作者: 最ヅ后愛上你    时间: 2009-11-4 00:24
我并不详细了解
是相对于ANSI字符来说的。
象我们中文输入的一个汉字，是一个宽字符。

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作者: ⊿°屵重缺銭    时间: 2009-11-4 00:24
头文件"
#ifndef COMPLEX_H_
#define COMPLEX_H_
class Complex0
{
private:
double real;
double imaginary;
public:
//construction
Complex0();
Complex0( double rea , double ima = 0.0 );
~Complex0();
// set real,imag from coordinate.
void setReal( double rea );
void setImag( double ima );
Complex0 operator+( const Complex0 &a );
// Complex0 operator-( const Complex0 &a );//删去,主函数没有用
// Complex0 operator*( const Complex0 &a );
// Complex0 operator*( double m );
friend ostream operator<<(ostream &os ,Complex0 & com );//去掉了const;
friend ostream operator>>(ostream &os ,Complex0 & com );//去掉了const
};
#endif
函数实现:
#include <iostream>
using namespace std;
#include "complex.h"
Complex0::Complex0()
{
real = 0.0;
imaginary = 0.0;
}
Complex0::Complex0( double rea , double ima )
{
real = real;
imaginary = ima;
}
Complex0::~Complex0()
{
cout << "Bye1" << endl;
}
// set real,imag from coordinate.
void Complex0::setReal( double rea )
{
real = rea;
}
void Complex0::setImag( double ima )
{
imaginary = ima;
}
Complex0 Complex0::operator+( const Complex0 &a )
{
Complex0 ccc;
ccc.real = real + a.real;
ccc.imaginary = imaginary + a.imaginary;
return ccc;
}
/* Complex0 Complex0::operator-( const Complex0 &a ) //删去,主函数没有用
{
Complex0 c;
ccc.real = real - a.real;
ccc.imaginary = imaginary - a.imaginary;
return c;
}
Complex0 Complex0::operator*( const Complex0 &a )
{
Complex0　c;
ccc.real = real * a.real - imaginary * a.imaginary;
ccc.imaginary = real * a.imaginary + imaginary * a.real;
return ccc;
}
Complex0 Complex0::operator*( double m )
{
Complex0 c;
ccc.real = m * real;
ccc.imaginary = m * imaginary;
return c;
}
*/
ostream operator <<(ostream &os ,Complex0 & com ) // 后加的,按照楼上的提示
{
os << "the complex's real :" << com.real << endl;
os << "the complex's imaginary: "<< com.imaginary << endl;
return os;
}
ostream operator >>(ostream &os ,Complex0 & com )
{
os << "the complex's real :" ;
os >> com.real << endl;
os << "the complex's imaginary: ";
os >> com.imaginary << endl;
return os;
}
主函数:
#include <iostream>
using namespace std;
#include "complex.h"
int main(void)
{
Complex0 a( 3.0, 4.0 );
Complex0 c;
cout << "Enter a complex number (q to quit )";
while( cin >> c )
{
cout << "c is "<< c << endl;
cout << "complex conjugate is " << -c << endl;
cout << "a is "<< a << endl;
cout <<"a + c = "<<a + c << endl;
cout << "Enter a complex number (q to quit)";
}
cout << "Bye!";
return 0;
}

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作者: 红苹果校园    时间: 2009-11-4 00:24

1. #ifndef COMPLEX_H_
   
2. #define COMPLEX_H_class Complex0
   
3. {
   
4. private:
   
5. double real;
   
6. double imaginary;
   
7. public:
   
8. //construction
   
9. // Complex0(); 这个去掉。
   
10. Complex0( double rea = 0.0, double ima = 0.0 );
    
11. ~Complex0();
    
12. // set real,imag from coordinate.
    
13. void setReal( double rea );
    
14. void setImag( double ima );
    
15. Complex0 operator+( const Complex0 &a );
    
16. Complex0 operator-( const Complex0 &a );
    
17. Complex0 operator*( const Complex0 &a );
    
18. Complex0 operator*( double m );
    
19. 
    
20. friend ostream& operator<<(ostream &os, const Complex0 &a);
    
21. friend istream& operator>>(istream &is, Comlex0 &a); //不要加const，因为要改变a
    
22. Complex0 operator-();//一元，好象是这样。
    
23. }

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作者: 听妈妈的话    时间: 2009-11-4 00:24
你把 / / Complex0(); 这个去掉。
那么在函数中友个 +重载里面的第一句不好实现!Complex0 ccc;

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作者: 賤xs騷    时间: 2009-11-4 00:24
怎么没有高手帮忙呀

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作者: v九天〓云龙    时间: 2009-11-4 00:24

1. 
   
2. #include <iostream>
   
3. #include <cstdlib>
   
4. using namespace std;
   
5. 
   
6. class Complex0
   
7. {
   
8. private:
   
9. double real;
   
10. double imaginary;
    
11. public:
    
12. //construction
    
13. Complex0( double rea = 0.0, double ima = 0.0 );
    
14. ~Complex0();
    
15. // set real,imag from coordinate.
    
16. void setReal( double rea );
    
17. void setImag( double ima );
    
18. Complex0 operator+( const Complex0 &a ) const;
    
19. Complex0 operator-( const Complex0 &a ) const;
    
20. Complex0 operator-() const;
    
21. Complex0 operator*( const Complex0 &a ) const;
    
22. Complex0 operator*( double m ) const;
    
23. friend ostream & operator<<(ostream & os, const Complex0 & c);
    
24. friend istream & operator>>(std::istream & is, Complex0 & c);
    
25. };
    
26. 
    
27. /*Complex0::Complex0()
    
28. {
    
29. real = 0.0;
    
30. imaginary = 0.0;
    
31. }*/
    
32. 
    
33. Complex0::Complex0(double rea , double ima )
    
34. {
    
35. real = rea;
    
36. imaginary = ima;
    
37. }
    
38. 
    
39. Complex0::~Complex0()
    
40. {
    
41. cout << "Bye1" << endl;
    
42. }
    
43. 
    
44. // set real,imag from coordinate.
    
45. void Complex0::setReal( double rea )
    
46. {
    
47. real = rea;
    
48. }
    
49. 
    
50. void Complex0::setImag( double ima )
    
51. {
    
52. imaginary = ima;
    
53. }
    
54. 
    
55. Complex0 Complex0::operator+( const Complex0 & a) const
    
56. {
    
57. return Complex0(real+a.real, imaginary+a.imaginary);
    
58. }
    
59. 
    
60. Complex0 Complex0::operator-( const Complex0 &a ) const
    
61. {
    
62. return Complex0(real - a.real, imaginary - a.imaginary);
    
63. }
    
64. 
    
65. Complex0 Complex0::operator-() const
    
66. {
    
67. return Complex0(-real, -imaginary);
    
68. }
    
69. 
    
70. Complex0 Complex0::operator*( const Complex0 & a) const
    
71. {
    
72. return Complex0(real*a.real - imaginary*a.imaginary,
    
73. real*a.imaginary + imaginary*a.real);
    
74. }
    
75. 
    
76. Complex0 Complex0::operator*( double m ) const
    
77. {
    
78. return Complex0(m * real, m * imaginary);
    
79. }
    
80. 
    
81. ostream & operator<<(ostream & os, const Complex0 & c)
    
82. {
    
83. if(c.imaginary > 0)
    
84. os<<c.real<<"+i"<<c.imaginary;
    
85. else if(c.imaginary == 0)
    
86. os<<c.real;
    
87. else
    
88. os<<c.real<<"-i"<<-c.imaginary;
    
89. return os;
    
90. }
    
91. 
    
92. istream & operator>>(std::istream & is, Complex0 & c)
    
93. {
    
94. if(is>>c.real)
    
95. {
    
96. if(is>>c.imaginary)
    
97. return is;
    
98. else
    
99. {
    
100. exit(1);
     
101. }
     
102. }
     
103. else
     
104. {
     
105. exit(1);
     
106. }
     
107. }
     
108. 
     
109. int main (void)
     
110. {
     
111. Complex0 a(3.0, 4.0);
     
112. Complex0 c;
     
113. cout << "Enter a complex number (q to quit )\n";
     
114. while( cin >> c )
     
115. {
     
116. cout << "c is "<< c << endl;
     
117. cout << "complex conjugate is " << -c << endl;
     
118. cout << "a is "<< a << endl;
     
119. cout <<"a + c = "<<a + c << endl;
     
120. cout << "Enter a complex number (q to quit)";
     
121. }
     
122. cout << "Bye`!";
     
123. system("pause");
     
124. return 0;
     
125. }
     

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