为什么输出不了最后一行 printf("是否属于肥胖儿童:%c\n",isfat);

#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:%dCM\n",height);

    printf("体重:%fKG\n",weight);

    printf("是否属于肥胖儿童:%c\n",isfat);

    return 0;

}