I$\text{'}$m writing a C$++$ program to call a function, please help me with the part shown in the picture, because some of the text parts can't be displayed on the page, so please look directly at the C$++$ program on the picture and teach me how to do it$.```$

#include

using namespace std;

const int MAX$\_$NM$\_\_$TOWER $=4$;

const int MAX$\_$NM$\_$FLOOR $=4$;

const int MAX$\_$ENCOUNTER$\_$LENGTH $=10$;

$//$ Helper function to copy values an array to another. Provided.

void copy$\_$floor$($int to$[],$ const int from$[])\{$

for $($int i$=0$; i $\backslash$MAX$\_$NM$\_$FLOOR; i $++)\{$

to$[$i$]=$ from$[$i$]$;

$\}$

$\}$

$//$ Helper function to calculate strength based on operation

$/**$

$*$ TODO:Given the current strength and an encounter, calculate the new strength.

$*$ An encounter is a C string that contains an operator and a number $($an integer$),$ e$.$g$."+10","$M$15","*2","$M$35".$

$*$ The operator can be $\text{'}+\text{'},\text{'}-\text{'},\text{'}*\text{'},\text{'}/\text{'},$ or $\text{'}$M$\text{'}.$

$*-\text{'}+\text{'}$ and $\text{'}-\text{'}$ are normal addition and subtraction.

$*-\text{'}*\text{'}$ is multip$1$ication.

$*-\text{'}/\text{'}$ is integer division.

$*-\text{'}$IM$\text{'}$ represents the monster encounter. If the current strength is greater than the number, you defeat the monster and add the number to the strength. Otherwise, assign $-1$ to strength.

$*$ Note that you need to extract the number from the C string and convert it to an integer before performing the operation.

$*/$

int calculate$\_$strength$($int strength, const char encounter$[$MAX$\_$ENCOINTER$\_$LENGTH$])\{$

return $0$;

$\}$

$```$