제출 #76877

실행 실패 (제출 코드 컴파일 에러)

Main.c:7:9: error: unknown type name ‘XY’
    7 | int ccw(XY a1,XY a2,XY a3)
      |         ^~
Main.c:7:15: error: unknown type name ‘XY’
    7 | int ccw(XY a1,XY a2,XY a3)
      |               ^~
Main.c:7:21: error: unknown type name ‘XY’
    7 | int ccw(XY a1,XY a2,XY a3)
      |                     ^~
Main.c: In function ‘main’:
Main.c:27:5: error: unknown type name ‘XY’; use ‘struct’ keyword to refer to the type
   27 |     XY b1={x1,y1},b2={x2,y2},b3={x3,y3},b4={x4,y4};
      |     ^~
      |     struct 
Main.c:27:15: warning: excess elements in scalar initializer
   27 |     XY b1={x1,y1},b2={x2,y2},b3={x3,y3},b4={x4,y4};
      |               ^~
Main.c:27:15: note: (near initialization for ‘b1’)
Main.c:27:26: warning: excess elements in scalar initializer
   27 |     XY b1={x1,y1},b2={x2,y2},b3={x3,y3},b4={x4,y4};
      |                          ^~
Main.c:27:26: note: (near initialization for ‘b2’)
Main.c:27:37: warning: excess elements in scalar initializer
   27 |     XY b1={x1,y1},b2={x2,y2},b3={x3,y3},b4={x4,y4};
      |                                     ^~
Main.c:27:37: note: (near initialization for ‘b3’)
Main.c:27:48: warning: excess elements in scalar initializer
   27 |     XY b1={x1,y1},b2={x2,y2},b3={x3,y3},b4={x4,y4};
      |                                                ^~
Main.c:27:48: note: (near initialization for ‘b4’)
Main.c:28:11: warning: implicit declaration of function ‘ccw’ [-Wimplicit-function-declaration]
   28 |     int l=ccw(b1,b2,b3)*ccw(b1,b2,b4);
      |           ^~~
Main.c:25:5: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   25 |     scanf("%lld %lld %lld %lld",&x1,&y1,&x2,&y2);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.c:26:5: warning: ignoring return value of ‘scanf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   26 |     scanf("%lld %lld %lld %lld",&x3,&y3,&x4,&y4);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~