口 String str = "12345";
int i = 0;
while ( i++ < str.length());
口 str = "12345";
for (c in str):
continue;
口 char *str = "12345";
while (*str++);
口 String str = "12345";
int i = 0;
for (int i = 0; i < str.length();
++i);
口 char *str = "12345";
while (i++ && i < strlen(str); ) continue
口 None of these answers are correct.