hello.c
#include?<stdio.h>
#include?"2.c"???//引用test.c
extern?void?printLine()?????//這里定義的方法對嗎？
{
???printf("**************\n");???
}
int?main()
{
????say();
????return?0;
}
test.c
#include?<stdio.h>
void?say(){
????printLine();
????printf("I?love?imooc\n");
????printf("good?good?study!\n");
????printf("day?day?up!\n");
????printLine();
}