问题描述 新编得程序函数调用总出错,求大神帮忙.. #include int my_str_len(void); int print_char_array_values(void); int char_array_reverse(void); int main(void){ char arr[30]; int i; char e,n,d; while(3){ puts("Please provide a character string,don't type more than 30 eleme