char* names[]={"A", "B", "C"};

num = sizeof(names) / sizeof(names[0]);

#include<stdio.h>

int main(void)
{
    char* names1[]={"A", "B", "C"}; // Three elements
    char* names2[]={"A", "", "C"}; // Three elements
    char* names3[]={"", "A", "C", ""}; // Four elements
    char* names4[]={"John", "Paul", "George", "Ringo"}; // Four elements
    char* names5[]={"", "B", NULL, NULL, "E"}; // Five elements

    printf("len 1 = %zun",sizeof(names1)/sizeof(names1[0]));
    printf("len 2 = %zun",sizeof(names2)/sizeof(names2[0]));
    printf("len 3 = %zun",sizeof(names3)/sizeof(names3[0]));
    printf("len 4 = %zun",sizeof(names4)/sizeof(names4[0]));
    printf("len 5 = %zun",sizeof(names5)/sizeof(names5[0]));
}

len 1 = 3
len 2 = 3
len 3 = 4
len 4 = 4
len 5 = 5

int namesLen = sizeof(names) / sizeof(char);

char **names = { "A", "B", "C" };

int namesLen = 3;

char **names = { "A", "B", "C", NULL };

int namesLen = -1;
while (names[++namesLen] != NULL) { /* do nothing */}

// namesLen is now the length of your array

struct Array {
    void **values;
    int length;
};

#define array(elements...) ({ void *values[] = { elements }; array_make(values, sizeof(values) / sizeof(void *)); })
#define destroy(arr) ({ free(arr.values); })

struct Array array_make(void **elements, int count)
{
    struct Array ret;
    ret.values = malloc(sizeof(void *) * count);
    ret.length = count;

    for (int i = 0; i < count; i++) {
        ret.values[i] = elements[i];
    }

    return ret;
}

struct Array myArray = array("Hi", "There", "This", "Is", "A", "Test");
// use myArray

printf("%i", myArray.length);
destroy(myArray);

size_t size = sizeof(names)/sizeof(char*);

int count = sizeof(names)/sizeof(*names);

#include<stdio.h>

int main(void){
    size_t size, i=0;
    int count=0;
    char* names[]={"A", "B", "C"};

    size = sizeof(names)/sizeof(char*);

    for(i=0;i<size;i++){
        printf("%d - %sn",count+1, *(names+i));
        count++;
    }

    printf("n");
    printf("The number of strings found are %dn",count);
    return 0;
}

1 - A
2 - B
3 - C

The number of strings found are 3

#include<stdio.h>

int main(void){
    size_t size, i=0;
    int count=0;
    char *names[]={"Jimmy", "Tom", "Michael", "Maria", "Sandra", "Madonna"};

    size = sizeof(names)/sizeof(char*);

    for(i=0;i<size;i++){
        printf("%d - %sn",count+1, *(names+i));
        count++;
    }

    printf("n");
    printf("The number of strings found are %dn",count);
    return 0;
}

1 - Jimmy
2 - Tom
3 - Michael
4 - Maria
5 - Sandra
6 - Madonna

The number of strings found are 6

#include<stdio.h>

size_t arrLength(size_t len, char **arr){
    size_t i=0;
    size_t count=0;

    for(i=0;i<len;i++){
        printf("%zu - %sn",count+1, *(arr+i));
        count++;
    }

    return count;
}

int main(void){
    char *names[]={"Jimmy", "Tom", "Michael", "Maria", "Sandra", "Madonna"};
    size_t length,size;

    size = sizeof(names)/sizeof(char*);
    length = arrLength(size, names);

    printf("n");
    printf("The number of strings found are %zun",length);
    return 0;
}

1 - Jimmy
2 - Tom
3 - Michael
4 - Maria
5 - Sandra
6 - Madonna

The number of strings found are 6

#include <stdio.h>

int main()
{
    char* names[] = {"John", "Paul", "George", "Ringo", ''};

    int size = 0;
    while(names[++size]!='');

    printf("Size: %dn", size); // Prints "4"

    return 0;
}

// For size_t
#include <stddef.h>

char* names[] = { "A", "B", "C" };
size_t number_of_strings = sizeof names / sizeof names[0];

printf("Number of strings %zun", number_of_strings);

char* names[] = {"An", "Bed", "Cards"};

    int arrayIndex, counter;
    for (arrayIndex = 0; arrayIndex < (sizeof(names)/sizeof(char*)); arrayIndex++) {
        //counting also chars in each string (extra, not necessarily the question)
        char* stringAtIndex = names[arrayIndex];
        char c;
        int i = 0;
        do {
            c = *(stringAtIndex + i++);
        } while (c != '');
        counter += (i-1); //exclude terminating char ''
    }
    printf("Number of array elements: %d", arrayIndex+1); //number of strings
    printf("Total chars %dn", counter); // Prints 10 which is number of chars excluding ''

#include<stdio.h>
char* names[]={"A", "B", "C"};

int main(){
int nameSize = 0;
while(names[++nameSize]!='');
}

for(i=0;i<nameSize;i++){
printf("%sn", names[i]);
}

return 0;
}

A
B
C