My C++ code not showing floating point value

Question

My code is not showing exact float value means number after point is not displayed by the code I am using Turbo C for sum up the series 1 + 1/3 + 1/5 + 1/7 + 1/9+….. Up to N terms

#include<iostream.h>
#include<conio.h>
void main()
{
    int k=0;
    int m=0;
    int s=1;
    clrscr();
    cout<<"Enter the limit of the series: ";
    cin>>m;
    for(int j=1;j<=m;j=j+2)
    {
          m=1/j;
          s+=m;
    }
    cout<<"Sum of the given series is: "<<s;
    getch();
}

Any time you ask a question, you should clearly state (**1**)what input you gave your program, (**2**)what output you expected, and (**3**)what output you actually got. This question failed on all three points. — abelenky, Jun 27 '13 at 18:36

score 3 · Accepted Answer · answered Jun 27 '13 at 18:12

3

You're using int which only displays Integer (ie whole number) values. It truncates any decimal places because it assumes you don't want them. Try using float or double instead.

answered Jun 27 '13 at 18:12

Eric Palace

322
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14

score 1 · Answer 2 · answered Jun 27 '13 at 18:12

Integer division will not give you anything other than integer results.

You need to:

Change s to a float or double.
change m to a float or double.
Change 1 in 1/j to 1.0f or 1.0 (for float and double respectively).

Now, you probably also want to use a different variable than m for your input and for-loop limit variable, so that you don't stop too quickly once the calculation starts.

score 0 · Answer 3 · answered Jun 27 '13 at 18:12

0

Use the type double for variables m and s.

answered Jun 27 '13 at 18:12

shiraz

1,208
2
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26

score 0 · Answer 4 · answered Jun 27 '13 at 18:34

Here are the variables you declared in your code.

int k=0;
int m=0;
int s=1;

Where exactly do you think you have a floating point number?
(which would have to be of type float or double)

You do know that int means integer, right?
(eg. Not a floating point number)

My C++ code not showing floating point value

4 Answers4