Thread: problem printing with floating number

hello, can any one tell me why the following program is not printing me the zero even though i use the setfill function to fill the 0's after the decimal number.

here is the program:

this is a funciotn which i am using to print the all the numbers. but when run the program with this value 38.617

the out put should me this +, integer part -> 38 and the decimal part -> 0.617( here i wanted it as 0.6170)

but it is not doing not can any one tell why it is

Try adding showpoint and fixed to the output stream. That is:

std::cout << showpoint << fixed << setprecision(4) << my_float;

Honestly, I'm not sure what you're trying to do. Can you be more specific?

basically the problem is to separate the parts of a number like if it is

38.617

sign +
intger part 38
decimal part 0.6170

i have written a program to sperate its parts and stored it variables. when i send that variable to the function printout it is not printing the

decimal part as 0.6170 instead it is printing 0.617 (zero is missing)
when i tried putting setfill and setprecision function it gives me the same result

hopefully now you can get the problem what it is

Maybe this helps?

Code:

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
   float d = 0.6740;


   cout << d << endl;
   cout << showpoint << d << endl;
   cout << setprecision(4) << d << endl;

   return 0;
}

Output on a Unix machine...

Code:

0.674
0.674000
0.6740

thanks very much guys it is working fine now

thanks again