Invalid operands to binary. Friend c++. error: invalid operands of types 'double' and 'int' to binary 'operator%'. cannot convert 'const void *' to 'const char *'. invalid operands of types ‘double’ and ‘int’ to binary ‘operator%’.

Invalid operands to binary. Friend c++. error: invalid operands of types 'double' and 'int' to binary 'operator%'. cannot convert 'const void *' to 'const char *'. invalid operands of types ‘double’ and ‘int’ to binary ‘operator%’.
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