Heart Shaped Program

#include <stdio.h>
#include <math.h>

       int main                 (void ){
    double x,y,z,xi,      xd,yi,yd;int o,i;
 xi =3.0/80; yi =3.0/28; int px[80]; for (i=0;
 i < 80; i++) px[i]=0; yd = -1.5;for(y = -1.5;
 y < 1.5;y+=0.001) {o = 0; i = 0; xd =-1.5;for   
  (x=-1.5;x<1.5;x+=0.00001) {z=x*x+y*y-1;o|=(
    fabs(z*z*z+x*x*y*y*y) < .000002); if(x-
      xd > xi){ if (o) px[i++] |= 1; else
        px[i++] |= 0; o = 0;xd += xi;}}
          if (y - yd > yi){ for (i=0;
            i<80;i++){putchar(px[i]
              ?'x':' '); px[i]=0;
                }putchar('\n');
                  yd  +=  yi;
                    }     }
                       }

It's a heart-shaped C program that prints a heart. I did this in about 15 minutes, so it's not particularly clever obfuscation or particularly good code; it's just a quick-n-dirty implicit curve plotting function that's been...reshaped. I think you could get rid of the two lines at the top, but it's tricky because it's hard to make int putchar(int);double fabs(double); fit into the heart shape.

Here is the output:

                xxxxxxx xxxxxxx            xxxxxxx xxxxxxx                
            xxxx              xxxxxx  xxxxxx              xxxx            
         xxx                       xxxx                       xxx         
        xx                                                      xx        
       xx                                                        xx       
      xx                                                          xx      
      x                                                            x      
      x                                                            x      
      xx                                                          xx      
       xx                                                        xx       
        xx                                                      xx        
         xx                                                    xx         
          xx                                                  xx          
           xxx                                              xxx           
             xxx                                          xxx             
               xxxx                                    xxxx               
                  xxxx                              xxxx                  
                     xxxx                        xxxx                     
                        xxxxx                xxxxx                        
                            xxxxxx      xxxxxx                            
                                 xxxxxxxx                                 
                                    xx