c use strlen code example

Example 1: c strlen

int my_strlen(char *str) {
  int i = -1;
  
  while (str && str[++i]);
  return (i);
}

Example 2: length of string c

int main() { char a[100]; int length;
printf("Enter a string to calculate its length\n"); gets(a);
length = strlen(a);
printf("Length of the string = %d\n", length);
return 0; }