Can you tell me what is my mistake, and how can i fix it?

yeah hello guyz, i need your help with something. this is what i am trying to figure out "table of fractions and their decimal equivalents, rounded to 3 decimal positions."
it should be like this
1/2 = 0.500
1/3 = 0.333
1/4 = 0.250
1/5 = 0.200
1/6 = 0.167
......
1/20 = 0.050
and then it should end. i have the code but i don't what is the problem. i have one warning though if it is important. i am done with most of the code and now i don't know what is going on.
here's my code...
int num = 1;
float result;
int Fraction_Table;
cout << " Fraction Table " << endl;
cin >> Fraction_Table;
while (num < 20)

result = 1/num;
cout << " \n1/ " << num << " = " << result ;
cout << "\nThe End";
please help

I don't quite see what you are doing with the whole cin bit etc. I'll make you a MUCH improved code ;)

float ans;

for(float i=1;i<=20;i++){
ans = 1/i;
cout << "1/" << i << " = " << ans << endl;
if(i==20) break;
}
cin.get();
return 0;

What exactly is the Fraction_Table variable doing? Other than that, I'd say wrap the statements you want in the loop in brackets, increment your num variable, type cast num as a float in your assignment to result and use <iomanip> if you want to format the decimals.

Looks like you need to increment num

while (num < 20)
{
result = 1/num;
cout << " \n1/ " << num << " = " << result ;
num++;
}
cout << "\nThe End";