Struggling with arrays of character strings,

Projects Programming
5

Ok, you'all got me much closer. Using the actual array's I am trying to use, here is what I came up with...

#include "Arduino.h"

char const *menu1[] = {"Options","Start","Movement","Shutter",NULL};
char const *menu1_1[] = {"Step Size","Settle Time","Pause Time","Frames","Distance","Exit",NULL};

void displayMenu(char const **);

void setup() {
    Serial.begin (9600);
    }


void loop(){
    displayMenu(char const **menu1);   // <---- error highlights this line.
    }

//for now, I simply want to print the number of elements.
void displayMenu(char const **a) {
    int ln = 0
    while (**a) {
          a++;
          ln++;
          Serial.println(ln);
          }

this results in the following error: "expected primary-expression before 'char'
highlighted line is displayMenu(char const **menu1);

not really sure what its telling me.