C++ : error: invalid operands of types 'int' and ' unresolved overloaded function type ' to binary '

C++ : error: invalid operands of types 'int' and ' unresolved overloaded function type ' to binary 'operator '
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C++ : error: invalid operands of types 'int' and ' unresolved overloaded function type ' to binary 'operator '
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binary ' type ' and function 'int' 'operator C++ : unresolved operands to invalid ' overloaded types of error: