How make a for loop

how do i make a for loop loop all the way through until it gets before the null character of an array

i want to print something using a for loop and array

so i got an array of a word from a file
for example the word year
but there are other words in the file with different lengths

now I know
that the word year gets stored into my word[] array and i think word[4] is where the null character \0 is.


now i want to print an x for the length of the word but i want it to go up to until before the null character


for(i=0;i<word[NULL];i++){

printf("x");

}

so i want i to print all the way up to before the null character of the word that gets stord into my word[]array

Remember that zero is false and non-zero is true. And that you remain in the for loop as long as the test expression is true (ie, non-zero). And that the null character has an ASCII code of zero and so would be considered false, while all other characters are non-zero and would be considered true.

while(*word++)
{
printf("x");
}

word is a pointer and null is zero so you can increment address one by one and you dereference the pointer until you reach zero.

No, word is an array, not a pointer. You cannot increment or decrement an array name. As we are taught: array names are for the most part equivalent to pointers. This is one of the cases where that general rule does not apply.

Rather, declare a char pointer and initialize it to word, then increment the pointer.

Ah you are right, sorry!

he should do

This also works
for(i=0;word[i] != '\0';i++)