#include <stdio.h>
float bmi( float, float ) ;
int main(void) {
	float height, weight, value ;
	printf("体重を入力してください：");
	scanf("%f", &weight ) ;
	printf("%f \n", weight);
	printf("身長を入力してください：");
	scanf("%f", &height ) ;
	printf("%f\n", height) ;
	value = bmi( weight, height ) ;
	printf("BMI指数：%f \n", value ) ;
	return 0;
}
float bmi( float x, float y ){
	float z ;
	z = x / y / y ;
	return z ;
}
 

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69.3
1.715