{"id":7681,"date":"2022-09-09T23:26:24","date_gmt":"2022-09-09T17:56:24","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-addition-operator-overloading-for-complex-numbers-duplicate\/"},"modified":"2022-09-09T23:26:24","modified_gmt":"2022-09-09T17:56:24","slug":"solved-addition-operator-overloading-for-complex-numbers-duplicate","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-addition-operator-overloading-for-complex-numbers-duplicate\/","title":{"rendered":"[Solved] Addition operator overloading for complex numbers [duplicate]"},"content":{"rendered":"

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There are tons of errors here, from incorrect attempts to overload operators to using data members by the wrong name. I’ll step through what I see.<\/p>\n

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When defining the binary operator+<\/code> as a member function it only takes one argument, which is the right-hand argument to +<\/code> (the left-hand is implicitly *this<\/code>).<\/p>\n

Also your operators use the nonexistent fields r<\/code> and i<\/code> — you probably meant real<\/code> and imaginary<\/code>.<\/p>\n

class Complex\n{\n    \/\/ ...\n\npublic:\n    \/\/ Wrong, will cause compile-time errors:\n    \/\/ Complex operator+(Complex c1, Complex c2);  \n\n    \/\/ Right:\n    Complex operator+(Complex c);\n};\n\nComplex Complex::operator+(Complex c) \n{\n    Complex result;\n    result.real = real + c.real;\n    result.imaginary = imaginary + c.imaginary;\n    return result;\n}\n<\/code><\/pre>\n
Alternatively you can define the operator as a free function instead of as a member of the class, but you’d have to make it a friend of the class since it accesses private members:<\/p>\n
class Complex\n{\n    \/\/ ...\n\n    friend Complex operator+(Complex, Complex);\n};\n\nComplex operator+(Complex c1, Complex c2) \n{\n    Complex result;\n    result.real = c1.real + c2.real;\n    result.imaginary = c1.imaginary + c2.imaginary;\n    return result;\n}\n<\/code><\/pre>\n
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Similarly, your operator<<<\/code> overload for std::ostream<\/code> should be a free function, and needs to be fixed to use real<\/code> and imaginary<\/code>.  However, since these members are private to Complex<\/code>, this will fail unless you make this operator a friend of Complex<\/code>.  Since ostream<\/code> is an abstract type you can’t accept or return instances by value, you need to use references.  Further you don’t actually return anything.<\/p>\n
class Complex\n{\n    \/\/ ...\n\n    friend ostream & operator<<(ostream &, Complex);\n};\n\nostream & operator<<(ostream & out, Complex number)\n{\n    out << number.real << \"+\" << number.imaginary << endl;\n    return out;\n}\n<\/code><\/pre>\n
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Your Complex<\/code> class is missing a default constructor, so you can’t declare variables like Complex c;<\/code> because this requires the existence of the default constructor:<\/p>\n
class Complex\n{\n    \/\/ ...\n\npublic:\n    Complex();\n};\n\nComplex::Complex() : real(0), imaginary(0) { }\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            11<\/span> <\/p><\/div>\n<\/div>\n
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solved Addition operator overloading for complex numbers [duplicate] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] There are tons of errors here, from incorrect attempts to overload operators to using data members by the wrong name. I’ll step through what I see. When defining the binary operator+ as a member function it only takes one argument, which is the right-hand argument to + (the left-hand is implicitly *this). Also your … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324],"class_list":["post-7681","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c"],"yoast_head":"\n[Solved] Addition operator overloading for complex numbers [duplicate] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-addition-operator-overloading-for-complex-numbers-duplicate\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Addition operator overloading for complex numbers [duplicate] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] There are tons of errors here, from incorrect attempts to overload operators to using data members by the wrong name. 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