#include<stdio.h>//頭文件漏了
int?main()
{
????int?age?=?18;???????????????????/*這里定義年齡*/????
????printf("我今年%d歲!\n",?age);????
????return?0;?
????}

#include <stdio.h>

#include<stdio.h>

int main() {int age=18;

printf("我今年%d歲\n",age);

return 0;

}

#include<stdio.h>??????/*頭文件不要忘寫啦*/
int?main()
{
????int?age=18;
????printf("我今年%d!\n",age);
????return?0;
}