C :

#include<stdio.h>
main()
{
	char sex;
	float faHeight,moHeight;
	char sport;
	char diet;
	float height = 0;
	scanf(" %c",&sex);
	scanf("%f %f",&faHeight,&moHeight);
	scanf(" %c",&sport);
	scanf(" %c",&diet);
	if(sex == 'M')
	{
		height = (faHeight + moHeight) * 0.54;
		if(sport == 'Y')
			height = height*1.02;
		if(diet == 'Y')
			height = height*1.015;
	}
	else
	{
		height = (faHeight + moHeight)/2;
		if(sport == 'Y')
			height = height*1.02;
		if(diet == 'Y')
			height = height*1.015;
	}
	printf("%0.2f",height);
	return 0;
}

C++ :

#include<bits/stdc++.h>
using namespace std;
char a,b,c;
double sg;
double fh,mh;
int main()
{
	cin>>a;
	cin>>fh>>mh;
	cin>>b>>c;
	if(a=='F'||a=='f')
		sg=(fh+mh)/2;
	if(a=='M'||a=='m')
		sg=(fh+mh)*0.54;
	if(b=='y'||b=='Y')
		sg+=sg/100*2;
	if(c=='y'||c=='Y')
		sg+=sg/100*1.5;
	printf("%.2f",sg);
   return 0;
}