함수 포인터 사용 예

#include <stdio.h>
#include <windows.h>

void DispArrow(int iPercent)
{
 printf("=>");
}
void DispStar(int iPercent)
{
 printf("*");
}
void DispMinus(int iPercent)
{
 printf("-");
}
void DispPercent(int iPercent)
{
 printf("%d%% 작업완료\n",iPercent);
}

int MyFunc(void (* DispFunc)(int))
{
 int iTotal = 0;
 int i;
 for (i = 0;i < 10;++i)
 {
  DispFunc((i+1)*10);
  iTotal = iTotal + i;
  Sleep(1000);
 }
 return iTotal;
}

void main()
{
 void (* DispFunc)(int);
 int iChoice;
 printf("선택 : ");
 scanf("%d",&iChoice);
 switch (iChoice)
 {
 case 1:
  DispFunc = DispArrow;
  break;
 case 2:
  DispFunc = DispStar;
  break;
 case 3:
  DispFunc = DispPercent;
  break;
 }
 int iResult = MyFunc(DispFunc);
 printf("iResult => %d\n",iResult);
}