Computers and Technology, 12.08.2020 07:01 naenae662
I keep getting this error: postfix. cpp: In function ‘double RPN_evaluation(std::string)’: postfix. cpp:42:26: error: cannot convert ‘__gnu_cxx::__alloc_traits > >::value_type {aka std::basic_string }’ to ‘char’ for argument ‘1’ to ‘int isOperand(char)’ if(isOperand(expr. at(g))){ ^ postfix. cpp:96:1: warning: control reaches end of non-void function [-Wreturn-type] } I am not sure what I am doing wrong, help please
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I keep getting this error: postfix. cpp: In function ‘double RPN_evaluation(std::string)’: postfix....
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