대소문자가 틀렸네요..

형이 님이 쓰신 글 :
: #include <stdio.h>
: #include <graphics.h>
: #include <conio.h>
: #include <math.h>
:
: #define PI M_PI
: #define MAX_theta 80
: #define ORIGIN_color WHITE
:
: void graph_deltaMAX(void);
: void graph_conf(void);
: void graph_legend(void);
: void mark1(int, int, int);
:
: int MAXDELTA[MAX_theta][2], MY1[MAX_theta][2];
: int j=0, center_x, center_y, zoomx=7, zoomy=2;
:
: void main(void)
: {
:     int gdrive = DETECT,gmode;
:     float step;
:     double theta, delta=OL, k=1.4;
:     double a, b, c, M, MaxDelta, My1;
:    
:     initgraph (&gdrive,&gmode,"");
:     graph_conf();
:    
:     step = 4./MAX_theta;
:     for(M=.1:M<=4; M+=step) {
:             MaxDelta = delta;
:             for(theta=.1; theta<=90.; theta=theta+.1) {
:                     a = M*M * sin(theta*PI/180.) * sin(theta*PI/180.)-1;
:                     b = M*M * (k+cos(2.*theta*PI/180.))+2;
:                     c = a/b;
:                     delta = atan((2.*c)/(tan(theta*PI/180.)))*180./PI;
:                    
:                     if (MaxDelta <= delta ) {
:                             MaxDelta = delta;
:                             MAXDELTA[(M*MAX_theta/4-1)][0] = center_x + zoomx * delta;
:                             MAXDELTA[(M*MAX_theta/4-1)][1] = center_y - zoomx * theta;
:                         }
:                         if(delta<0) delta = -100.;
:                             putpixel(center_x+zoomx*delta, center_y-zoomy*theta, BLUE);
:                         }
:                         {
:                             int tmpi;
:                             for (tmpi=0; tmpi<MAX_theta; tmpi++)
:                                 mark1(MAXDELTA[tmpi][0], MAXDELTA[tmpi][1], LIGHTRED);
:                             }
:                         }
:                         graph_deltaMax();
:                         graph_legend();
:                         getch();
:                         closegraph();
:                     }
:                     void mark1(int x, int y, int color)
:                     {
:                         putpixel( x+1, y, color);
:                         putpixel( x-1, y, color);
:                         putpixel( x, y+1, color);
:                         putpixel( x, y-1, color);
:                     }
:                     void graph_conf()
:                     {
:                         center_x=100;
:                         center_y=getmaxy()/2+100;
:                         line(100,center_y,getmaxx()-100,center_y);
:                         line(1000,center_y,100,100);
:                         setbkcolor(BLACK);
:                     }
:                     void graph_legend()
:                     {
:                         outtextxy(90,center_y+10,"0.0");
:                         outtextxy(getmaxx()-100,center_y-3,">X");
:                         outtextxy(81,96,"y ^");
:                         outtextxy(200,110,"Name: Ji-Hyung Kim");
:                         outtextxy(200,120,"Student #: 2001313955");
:                         outtextxy(180,350,"Deflection angle,delta,degrees");
:                         outtextxy(DEFAULT_FONT,VERT_DIR,1);
:                         outtextxy(80,110,"Shock Wave Angle,theta,degrees");
:                     }
:                     void graph_deltaMax()
:                     {
:                         int tmpi;
:                         long tmpj;
:                        
:                         setcolor(LIGHTGREEN);
:                         for (tmpi=2; tmpi<MAX_theta-2; tmpi++){
:                                 for (tmpj=1L; tmpj<100000; tmpj++);
:                                     line(MAXDELTA[tmpi][0],MAXDELTA[tmpi][1],
:                                     MAXDELTA[tmpi+1][0], MAXDELTA[tmpi+1][1];
:                                 }
:                                 setcolor(ORIGIN_color);
:                             }
:
: 이게 컴파일까지만 되고 그 이후론 linker error가 나네요...
: graph_deltaMax() 이거 한가지만 define하지 못한다고 자꾸 나와요 해결부탁해요..ㅡㅜ