In file included from main.cpp:8:0:
num.cpp: In member function 'Num& Num::operator=(const Num&)':
num.cpp:7:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator+(const Num&)':
num.cpp:12:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator-(const Num&)':
num.cpp:17:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator*(const Num&)':
num.cpp:22:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator+(int)':
num.cpp:27:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator-(int)':
num.cpp:32:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
num.cpp: In member function 'Num Num::operator*(int)':
num.cpp:37:11: error: statement has no effect [-Werror=unused-value]
this->value;
~~~~~~^~~~~
cc1plus: all warnings being treated as errors
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