String Length

A string scan usually stops when it reaches the null terminator.

string_length.c

#include <stdio.h>

int main(void) {
    char text[5] = {'h', 'i', '\0', 'x', '\0'};
    int stopAtNull = ;
    int length = 0;

    while (length < 5) {
        if (stopAtNull && text[length] == '\0') {
            break;
        }
        length++;
    }

    printf("length=%d\n", length);
    return 0;
}

#include <stdio.h>

int main(void) {
    char text[5] = {'h', 'i', '\0', 'x', '\0'};
    int stopAtNull = ;
    int length = 0;

    while (length < 5) {
        if (stopAtNull && text[length] == '\0') {
            break;
        }
        length++;
    }

    printf("length=%d\n", length);
    return 0;
}

scan A scan moves one character at a time through an array.

terminator check Stopping at `'\0'` prevents hidden buffer contents from being treated as text.