trouble with double

[max007_21]

Im nw to programing and was having trouble to make the following code work:

#include<stdio.h>
#include<math.h>
int main()
{
        double final_Z,re,im;
        re=0.0;
        im=0.0;
       
        re=re+1.0;
        im=im+5.0;
 
        printf("%d \n %d \n",re,im);    
 }

It gives the following output:

0
1072693248

I expect the output:
1
5

whats wrong help !!

[Trafalgar Law]

Use %f for decimal numbers.

[matsp]

Use %f for floating point numbers.

Correction in red above.

--
Mats

[Dino]

Use %fl for double floating point numbers.

Correction #2

[C_ntua]

Use %lf for double floating point numbers.

Correction #3

[matsp]

Correction #3

Actually, %lf is only correct for "double" when it comes to scanf. On printf (or any other variable argument function), all floating point values are passed as double, aside from long double (assuming the compiler supports long double at all). %f is fine for double. If you use %lf, it may work for double, but it is quite likely to NOT work - it may be undefined (older compilers) or it may interpret the value as a long double (modern compilers) - both of which is likely to render your output incorrect. Better to stick with %f (or %g or %e if you want different formatting preferences).

--
Mats

[max007_21]

thank you very much.