正确：

#include <stdio.h>
int main()
{
    int age = 15;
    int    height = 162;
    float    weight = 82.5;
    char    isfat = 'y';
    printf("年龄：%d 岁\n", age);
    printf("身高：%d CM\n", height);
    printf("体重：%f KG\n", weight);
    printf("是否属于肥胖儿童：%c\n", isfat);
    /*%d,%f,%c此类符号在后面会有讲解*/
    return 0;   
}

错误：

#include<stdio.h>
int main()
{
 int age = 15;
 int height = 162;
 float weight = 82.5;
 char isfat = 'y';
 printf ("年龄；%d 岁\n"，age);
 printf ("身高；%d CM\n",height);
    printf ("体重；%f KG\n",weight);
    printf ("是否属于肥胖儿童；%c\n",isfat);
    return 0;
}

求教！！