double mass, height, BMI;
start:
cout << "mass? :(kg)"; cin >> mass;
cout << "height? :(m)"; cin >> height;
if (height<=0) return 0;
BMI=mass/pow(height,2);
cout << "BMI:" << BMI<<endl;
if(BMI<16) // -------------------------------------------------start of the block
{
cout << "severly underweight" << endl;
}
else if (BMI >16 && BMI <=18.5)
{
cout<< "underweight"<< endl;
}
else if (BMI >18.5 && BMI <=25)
{
cout<< "normal" <<endl;
}
else if (BMI >25 && BMI <=30)
{
cout<< "overweight" << endl;
}
else
{
cout<<" you are fat" << endl;
}
goto start; // loop back
//--------------------------------------------------------end of the block
return 0;
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