Basic floating point arithmetic not working...

This is a discussion on Basic floating point arithmetic not working... within the C++ Programming forums, part of the General Programming Boards category; Hello, I am trying to run the following code (which is part of a larger program): Code: #include <iostream> #include ...

  1. #1
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    Basic floating point arithmetic not working...

    Hello,

    I am trying to run the following code (which is part of a larger program):

    Code:
    #include <iostream>
    #include <math.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <malloc.h>
    #include <time.h>
    #include <fstream>
    #define rand01 (0.9999999*double(rand())/RAND_MAX) 
    				
    #define getrandom(max1) (((rand())%(max1))) // random integer between 0 and max-1
    	  
    using namespace std;
    
    int main()
    {
    	double result;
    	int sec = 2;
    	int t = 10;
     	result= 2.0*3.14*(46/1000)*(sec*1000.0+t);
    
    	cout << result << "\n";
    
    	return 0;
    }

    My output for result is "0." This is incorrect. Anyone have any ideas?

    Thanks.

  2. #2
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    Note that due to integer division, the result of (46/1000) is 0.
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  3. #3
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    Thanks

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