What's error of my code?

Question

#include <iostream>
#include <stdlib.h>
#include <time.h>

using namespace std;

int main() {
cout<<endl<<"\nWeight:";
double weight;
cin>>weight;
cout<<endl<<"\nHeight:";
double height;
cin>>height;
double heightpow2=height*height;
double bmi=weight/heightpow2;
cout<<endl<<"\nBmi = "<<bmi;
double hlr=rand()%17.9+12;
if(bmi==hlr){
cout<<"\nWeight loss range";
}
double hwr=rand()%24+18;
if(bmi==hwr){
cout<<"\nHealthy weight range";
}
return 0;
}

Answer 1

like amost all languages:

if (low <= bmi && bmi < high)

== equals
!= different
< lower than
<= lower or equals
> greater than
>= greater or equals

&& logical AND
|| logical OR

Answer 2

What are the errors you are getting from it?

Answer 3

about int and double

Answer 4

what are you meaning by using % operator, so?

Answer 5

Arash the error says that you're trying to get remainder of integer division (% operator) with a decimal (double) as right operand (divisor)...

maybe you're trying to get 17.9 percent of rand()?
if so, you must do: rand()*17.9/100
... and add 12, obviously:

double hlr = rand()*17.9/100+12;

edit: similar for hwr ;)

Answer 6

No, I want to find a random number between the two number

Answer 7

so, first you doesn't need random values, nor hlr and hwr...

you just need to test if bmi is greater (or equal) than lowest boundary AND lowest than higest boundary ;)

Answer 8

With your solution, the errors disappear but the "if" command is no longer executed

Answer 9

what do you think doing with % initially?

and what are you trying to achieve?

as 'if' blocks have quite no chance to be executed, even if you provide the good calculation to get a decimal random value between two bounds ^^

Answer 10

What about "switch"?

Answer 11

what about explaining your purpose?

Answer 12

I named the variable under bmi in the code and now I want it to print a message if the value is between the two selected numbers

Answer 13

How?

Answer 14

You did type double value of int function.
For Example:
Int x = 28
double y = 17.9

Answer 15

Tanks a lot

Answer 16

#include <iostream>
#inlcude <stdlib.h>
#include <time.h>

using namespace std;

Int main()
{
double weight;
cout << "Weight : ";
cin >> weight;

cout << endl;

double height;
cout << " Height ";
cin >> height;

cout << endl;

double heightpow2 ;
heightpow2 =
height*height;

cout << endl;

double bmi ;
bmi = weight/heightpow2;

cout << "Bmi " << bmi << endl;

double hlr;
hlr = rand() % 17.9+12;

If(bmi==hlr)
{
cout << "Weight loss range";
}

double hwr;
hwr = rand()%24+18;

If(bmi==hwr)
{
cout << "Helthy weight range";
}

system(" pause")
return 0;
}

&&&&&:

If it c++ :
Do u include - <ctime>??
#include <ctime> "for rand"

And
Why u dont add : srand(0(time)) ?

Answer 17

Айдын номе