【C++学習ノート】構造と関数:BMI計算ウィジェット

#include 
#include 
using namespace std;
struct BMI
{
	double high;   //unit:m
	double weight; //unit:kg
};
double compBMI(BMI b);
void showStandHW(BMI b1,BMI b2);
BMI standBMI(BMI b);
int main()
{
    BMI human01;
    cout<>human01.high;
    cout<>human01.weight;
    BMI human=standBMI(human01);
    showStandHW(human01,human);
    system("pause"); 
	return 0;
}
double compBMI(BMI b)
{
	double bmi;
	bmi=b.weight/pow(b.high,2);
	return bmi;
}
BMI standBMI(BMI b)
{
	double bmi;
	double bmiTemp;
	double w;
	BMI stanWeight;
	int i;
	bmi=b.weight/pow(b.high,2);
	w=b.weight;
	if (bmi<=23.9&&bmi>=18.5)
	{
		stanWeight=b;
		cout<23.9);
		stanWeight.weight=w;
		cout<