README.md

The famous donut.c program re-written in Zig

• You can copy, paste and run the following zig code to view a spinning donut:

                        const std=@import
                    ("std");pub fn main()void{
                var A: f32=0 ;var B :f32 =0;var i:
            f32 =undefined;var j: f32 = undefined;var
          k:i32 =undefined;var z:[1760]f32=undefined;var
        b:[1760]u8=undefined;std.debug.print("\x1b[2J",.{}
      );while(true){@memset(&z,0);@memset(&b,32); j=0;while
    (j<6.28):(j+=0.07){i=0;while(i < 6.28) : (i+=0.02){const 
   c: f32 = std.math.sin(i);const d:f32=std.math.cos(j);const
   e:f32=std.math.sin(A);               const f: f32=std.math.
  sin(j);const  g: f32=                   std.math.cos(A);const
  h:f32 = d+2;const D:                     f32=1/(c * h*e + f*g
 + 5);const l:f32=std.                       math.cos(i) ;const
 m:f32= std.math.cos(                        B);const n:f32=std 
 .math.sin(B) ; const                       t:f32=((c * h)*g)-(
 f * e);const x : i32                      =@intFromFloat(40+30
 * D*(l*h*m-t*n));const                   y: i32=@intFromFloat(
  12 + 15*D*(l * h * n + t               * m)) ; const o : i32
   =x+80*y;const N:i32=@intFromFloat(8*((f*e-c*d*g)*m-c*d * e
    - f*g-l*d*n));const O=@as(u32 ,@intCast(o)); if(22>y and 
     y>0 and x>0 and 80 > x and D>z[O]){z[O]=D;if(N>0){b[O]=
      ".,-~:;=!*#$@" [@as(u32, @intCast( N))];} else{b[O] =
       ".,-~:;=!*#$@"[0];} }}}std.debug.print("\x1b[H",.{}
    	 );k=0;while(k<1761):(k+=1){if(@rem(k,80)!=0){std
         .debug.print( "{c}", .{b[@as(u32, @intCast(k))
    	    ]});}else{std.debug.print("{c}",.{10});}A
                 += 4.0e-5;B+=2.0e-5;}std.time.
                       sleep(30000000) ;}}

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