Three ways to find the length of a string

1. Iterate through the string, as long as you do not encounter the character 0, the counter is added 1.int my_strlen (const char *STR)//Plus const adornment more secure {int Count=0;while (*STR) {count++;str++;} return count;} 2. Recursive implementation of int my_strlen (const char *str) {while (*STR) {return 1+my_strlen (str+1);} return 0;} 3. Address subtraction int My_strlen (const char *str) {char *start=str;while (*str) {str++;} Return str-start;//address of the starting position-address = number of the end position}

Three ways to find the length of a string