#include <stdio.h>

typedef struct{
	int id;
	double height;
	double weight;
	double bmi;
}Body;

int main(void) {
	
	Body data[] = {{1,170,60},
	               {2,150,50},
	               {3,160,56},
	               {4,180,70}
	              };
	
	for(int i = 0;i < 4;i ++){
		data[i].bmi = data[i].weight / ((data[i].height / 100) * (data[i].height / 100));
		printf("id %d BMI %1f\n",data[i].id,data[i].bmi);
	}
	return 0;
}