Print array of strings vertically

I know how to print a single string vertically.

char test[100] = "test";
int i;
for(i=0;i<strlen(test);i++){
    printf("%c\n",test[i]);
}

Which will give me:

t
e
s
t

But how can I print an array of strings vertically? For example:

char listOfTest[2][10] = {"testing1","quizzing"};

So it can return:

tq
eu
si
tz
iz
gi
1g

>Solution :

Simply print a character from both strings.

(Better to test for the null character rather than repeatedly call strlen().)

for(i = 0; listOfTest[0][i] && listOfTest[1][i]; i++) {
  printf("%c%c\n", listOfTest[0][i], listOfTest[1][i]);
}

To extend to n strings …

size_t num_of_strings = sizeof listOfTest/sizeof listOfTest[0];
bool done = false;

for (size_t i = 0; listOfTest[0][i] && !done; i++) {
  for (size_t n = 0; n < num_of_strings; n++) {
    if (listOfTest[n][i] == '\0') {
      done = true;
      break;
    }
    printf("%c", listOfTest[n][i]);
  }
  printf("\n");
}