reverse.cpp: In function 'void displayBackwards$($std::string$)\text{'}$:

reverse.cpp:$20$:$31$: error: 'pos' was not declared in this scope

$20|$ displayBackwards$($s$.$substr$($pos$.$len$))$;$//$returns the substring of s s o

$f$ length len staring at poston pos $($zero is frist postion$)$

$$

${?}^{{?}^{?}}$

$[$jhuang$93$@hills $]$$ nano reverse.cpp

GNU nano $2\mathrm{.}9\mathrm{.}8$

reverse.cpp

#includes$==0s$ Dof length len staring $at$ poston pos $(zerois$ frist postion$)$

$=s.$size$()$;

$if(length==0)\frac{?}{?}\frac{?}{?}$ base case

cout