[已解决]c＋＋题复数的运算(*) 求大神太难了

寂寞知己 · 发表于 2021-6-20 20:04:04

本帖最后由寂寞知己于 2021-6-20 20:05 编辑

求大神给出代码
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求大神给出代码

最佳答案

月排行榜 / 总排行榜

人造人

2021-6-20 20:04:05

#include <iostream>
#include <cctype>
class complex_t {
public:
complex_t(double real, double imag = 0): real(real), imag(imag) {}
complex_t(): complex_t(0, 0) {}
friend std::istream &operator>>(std::istream &is, complex_t &rhs) {
is >>rhs.real >> rhs.imag;
if(is.get() != 'i') {
is.unget();
std::cerr << "invalid input" << std::endl;
return is;
}
if(!std::isspace(is.get())) {
is.unget();
std::cerr << "invalid input" << std::endl;
return is;
}
return is;
}
friend std::ostream &operator<<(std::ostream &os, const complex_t &rhs) {
const auto flags = os.flags();
os << std::noshowpos << rhs.real << std::showpos << rhs.imag << "i";
os.flags(flags);
return os;
}
friend const complex_t operator+(const complex_t &lhs, const complex_t &rhs) {
return complex_t(lhs.real + rhs.real, lhs.imag + rhs.imag);
}
private:
double real, imag;
};
int main() {
{
complex_t a;
std::cout << a << std::endl;
}
{
complex_t a(3);
std::cout << a << std::endl;
}
{
complex_t a(3, 4);
std::cout << a << std::endl;
}
{
complex_t a(3, 4), b(2, -7);
std::cout << a << ' ' << b << std::endl;
}
{
complex_t a(3, 4), b(2, -7);
complex_t c = a + b;
std::cout << c << std::endl;
}
{
complex_t a(3, 4), b(2, -7), c(-1, 8);
complex_t d = a + b + c;
std::cout << d << std::endl;
}
{
complex_t a;
std::cin >> a;
std::cout << a << std::endl;
}
{
complex_t a, b;
std::cin >> a >> b;
std::cout << a << ' ' << b << std::endl;
}
return 0;
}

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人造人 · 发表于 2021-6-20 20:04:05

#include <iostream>
#include <cctype>
class complex_t {
public:
complex_t(double real, double imag = 0): real(real), imag(imag) {}
complex_t(): complex_t(0, 0) {}
friend std::istream &operator>>(std::istream &is, complex_t &rhs) {
is >>rhs.real >> rhs.imag;
if(is.get() != 'i') {
is.unget();
std::cerr << "invalid input" << std::endl;
return is;
}
if(!std::isspace(is.get())) {
is.unget();
std::cerr << "invalid input" << std::endl;
return is;
}
return is;
}
friend std::ostream &operator<<(std::ostream &os, const complex_t &rhs) {
const auto flags = os.flags();
os << std::noshowpos << rhs.real << std::showpos << rhs.imag << "i";
os.flags(flags);
return os;
}
friend const complex_t operator+(const complex_t &lhs, const complex_t &rhs) {
return complex_t(lhs.real + rhs.real, lhs.imag + rhs.imag);
}
private:
double real, imag;
};
int main() {
{
complex_t a;
std::cout << a << std::endl;
}
{
complex_t a(3);
std::cout << a << std::endl;
}
{
complex_t a(3, 4);
std::cout << a << std::endl;
}
{
complex_t a(3, 4), b(2, -7);
std::cout << a << ' ' << b << std::endl;
}
{
complex_t a(3, 4), b(2, -7);
complex_t c = a + b;
std::cout << c << std::endl;
}
{
complex_t a(3, 4), b(2, -7), c(-1, 8);
complex_t d = a + b + c;
std::cout << d << std::endl;
}
{
complex_t a;
std::cin >> a;
std::cout << a << std::endl;
}
{
complex_t a, b;
std::cin >> a >> b;
std::cout << a << ' ' << b << std::endl;
}
return 0;
}

复制代码

寂寞知己 · 发表于 2021-6-20 20:11:13

寂寞知己 · 发表于 2021-6-21 07:41:26

人造人发表于 2021-6-20 23:22

a.cpp: In function ‘void Test0()’:
a.cpp:87:3: error: ‘COMPLEX’ was not declared in this scope
COMPLEX a, b(rp1), c(rp2, ip2);
^~~~~~~
a.cpp:88:11: error: ‘a’ was not declared in this scope
cout << a;
         ^
a.cpp:90:11: error: ‘b’ was not declared in this scope
cout << b;
         ^
a.cpp:92:11: error: ‘c’ was not declared in this scope
cout << c;
         ^
a.cpp: In function ‘void Test1()’:
a.cpp:102:3: error: ‘COMPLEX’ was not declared in this scope
COMPLEX a(rp1, ip1), b(rp2, ip2), c(rp3, ip3);
^~~~~~~
a.cpp:103:11: error: ‘a’ was not declared in this scope
cout << a << ' ' << b << ' ' << c << endl;
         ^
a.cpp:103:23: error: ‘b’ was not declared in this scope
cout << a << ' ' << b << ' ' << c << endl;
                     ^
a.cpp:103:35: error: ‘c’ was not declared in this scope
cout << a << ' ' << b << ' ' << c << endl;
                                 ^
a.cpp: In function ‘void Test2()’:
a.cpp:109:2: error: ‘COMPLEX’ was not declared in this scope
  COMPLEX a, b, c;
  ^~~~~~~
a.cpp:110:16: error: ‘a’ was not declared in this scope
  while (cin >> a >> b >> c)
            ^
a.cpp:110:21: error: ‘b’ was not declared in this scope
  while (cin >> a >> b >> c)
                  ^
a.cpp:110:26: error: ‘c’ was not declared in this scope
  while (cin >> a >> b >> c)
                        ^
a.cpp: In function ‘void Test3()’:
a.cpp:118:2: error: ‘COMPLEX’ was not declared in this scope
  COMPLEX a, b, c, d, s;
  ^~~~~~~
a.cpp:119:16: error: ‘a’ was not declared in this scope
  while (cin >> a >> b >> c >> d)
            ^
a.cpp:119:21: error: ‘b’ was not declared in this scope
  while (cin >> a >> b >> c >> d)
                  ^
a.cpp:119:26: error: ‘c’ was not declared in this scope
  while (cin >> a >> b >> c >> d)
                        ^
a.cpp:119:31: error: ‘d’ was not declared in this scope
  while (cin >> a >> b >> c >> d)
                           ^
a.cpp:121:3: error: ‘s’ was not declared in this scope
s = a + b + c + d;
^
a.cpp: In function ‘void Test4()’:
a.cpp:129:2: error: ‘COMPLEX’ was not declared in this scope
  COMPLEX a(2.5), b(3.6, 4.9), x, y, z;
  ^~~~~~~
a.cpp:130:10: error: ‘a’ was not declared in this scope
  cout << a << ' ' << b << ' ' << x << ' ' << y << ' ' << z << endl;
      ^
a.cpp:130:22: error: ‘b’ was not declared in this scope
  cout << a << ' ' << b << ' ' << x << ' ' << y << ' ' << z << endl;
                  ^
a.cpp:130:34: error: ‘x’ was not declared in this scope
  cout << a << ' ' << b << ' ' << x << ' ' << y << ' ' << z << endl;
                              ^
a.cpp:130:46: error: ‘y’ was not declared in this scope
  cout << a << ' ' << b << ' ' << x << ' ' << y << ' ' << z << endl;
                                          ^
a.cpp:130:58: error: ‘z’ was not declared in this scope
  cout << a << ' ' << b << ' ' << x << ' ' << y << ' ' << z << endl;
                                                      ^
a.cpp: In function ‘int main()’:
a.cpp:140:5: error: redefinition of ‘int main()’
int main()
   ^~~~
a.cpp:40:5: note: ‘int main()’ previously defined here
int main() {
   ^~~~

这是怎么回事

人造人 · 发表于 2021-6-21 07:52:37

寂寞知己发表于 2021-6-21 07:41
a.cpp: In function ‘void Test0()’:
a.cpp:87:3: error: ‘COMPLEX’ was not declared in this scop ...

我看不到你的代码呀

寂寞知己 · 发表于 2021-6-21 08:06:49

人造人发表于 2021-6-21 07:52
我看不到你的代码呀

用你的代码显示的错误

人造人 · 发表于 2021-6-21 08:08:59

寂寞知己发表于 2021-6-21 08:06
用你的代码显示的错误

这个报错不是我的代码

人造人 · 发表于 2021-6-21 08:10:45

寂寞知己 · 发表于 2021-6-21 08:16:56

人造人发表于 2021-6-21 08:10

确实是
不知道哪错了

人造人 · 发表于 2021-6-21 08:21:33

题目让使用 COMPLEX 这个名字，我用的是 complex_t，你把名字改一下
还有main函数中的内容

人造人 · 发表于 2021-6-21 08:28:48

你也看一看我写的代码呀，我不是完全按照题目要求写的
你要根据自己的需求进行修改的

寂寞知己 · 发表于 2021-6-21 08:37:40

人造人发表于 2021-6-21 08:28
你也看一看我写的代码呀，我不是完全按照题目要求写的
你要根据自己的需求进行修改的

a.cpp: In function ‘int main()’:
a.cpp:140:5: error: redefinition of ‘int main()’
int main()
^~~~
a.cpp:40:5: note: ‘int main()’ previously defined here
int main() {
^~~~

这是什么意思

人造人 · 发表于 2021-6-21 08:43:28

寂寞知己发表于 2021-6-21 08:37
a.cpp: In function ‘int main()’:
a.cpp:140:5: error: redefinition of ‘int main()’
int main( ...

有多个main函数？
没用过你刷题的那个软件，不知道应不应该写main函数，如何写main函数，不清楚你刷题的那个软件对代码有什么要求
这个代码在我这边测试没有问题

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[已解决]c＋＋题 复数的运算(*) 求大神 太难了

最佳答案

[已解决]c＋＋题复数的运算(*) 求大神太难了