Find the Length of a String

1#include <stdio.h>
2
3int stringLength(char str[]) {
4    int length = 0;
5    while (str[length] != '\0') {
6        length++;
7    }
8    return length;
9}
10
11int main() {
12    char str[100];
13    
14    printf("Enter a string: ");
15    scanf("%99s", str);
16    
17    printf("Length of \"%s\" = %d\n", str, stringLength(str));
18    return 0;
19}