Daily Programmer #194 Easy

194e.c

#define X extern
#define S struct
#define C case
#define D default
#define L return
#define W switch
#define I if
#define O _IO_
#define OF O##FILE
#define LG L 0
#define LB L 1
#define F(n) std##n
#define FF F(in)
#define FFF F(out)
#define P fputc
#define G fgetc
#define K fseek
#define E P(10,FFF);P(98,FFF);P(97,FFF);P(100,FFF);P(32,FFF);P(102,FFF);\
P(111,FFF);P(114,FFF);P(109,FFF);P(97,FFF);P(116,FFF);P(10,FFF);LB
#define EC(a,b) C a:P(b,FFF);u();LG;

S OF;                X S OF
*FF,*                FFF;t(
 ){I(G                (FF)!=
 -1){E                ;}LG;}
  e(){W                (G(F(
  in)))                {EC(98
   ,8)EC                (116,9
   )EC(                 110,10
    )EC(                 114,13
    )EC(                 34,34)
     EC(92                ,92)C
     -1:D:                E;}}u(
      ){W(G                (FF)){
      C -1:                E;C 34
       :L t()               ;C 92:
       L e()                ;D:K(
        FF,-                 1L,1);
        P(G(                 FF),FFF
         );L u                ();}}s
         (){I(                G(FF)
          !=34)                {E;}L
          u();}                main()
           {L s                 ();}