#include<stdio.h>
int main()
{
int age,height;
float weight;
char isfat;
age=15;
height=162;
weight=82.50000;
isfat='y'
printf("年龄：%d/n",age);
printf("身高: %d/n"，height);
printf("体重: %f/n",weight);
printf（"是否属于肥胖儿童:%c /n",isfat）;
return 0;
}
在age、heigeht、weight、isfat前加int、int、float、char
而不是重新定义
上一节说不同变量要分开赋值
int age,height;
age = 15;
height = 162;
float weight;
weight = 82.5;
char isfat;
isfat = 'y';
不同類型的變量要分開定義、賦值