Can anyone tell me why this code doesn't work?

Question

void hei(double, double, double);

int main()
{
double h, R, M;
cin >> h, R, M;
if(h>3){cout << "what are you, kangoroo?";return 0;}
if(h<=0){cout << "do you know meaning of word \"jump\"?";return 0;}
hei(h, R, M);
return 0;
}

void hei(double h, double R, double M)
{
long double h1, g;
R*=R;
g=6.67*10000*M/R;//M_10^21(kg), G 10^-11, R^2_10^-6(m).10^4 is left
//height~1/g
h1=h*9.8/g;
cout << "on that planet you can jump to " << h1 << " meters";
}

Answer 1

@Nika, are you running this code in Code Playground? because if you are, I have faced same situation before, here in SL Code Playground long double is not fully supported, if you think you can do with double, then resort to using double instead of long double.

To test my confession validity, you can write a code that declares, then assign a value to a long double type, and try to print the value, I have seen -0 or NAN as output from printing long double.

Hth, cmiiw

Answer 2

that is why i created function prototype. function gets called, that is not the problem.

Answer 3

it just always puts 0 as answer

Answer 4

i was showing how high can you jump on different planets(you enter radius and mass of those planets). and thank you for answers, it worked

Answer 5

you cant define function after main function. Codes are running from top to bottom

Answer 6

Actually I couldnt understand what are you trying to do with this code?