#include <stdio.h>
extern void printLine()???? //這里定義的方法對嗎？
{
?? printf("**************\n");??
}
void say()
{
??? printLine();
??? printf("I love imooc\n");
??? printf("good good study!\n");
??? printf("day day up!\n");
??? printLine();
}
int main()
{
??? say();
??? return 0;
}