Sams Teach Yourself C in 21 Days

16: for (;;)

17: {

18: puts(“\nEnter an integer between 1 and 10, 0 to exit: “);

19: scanf(“%d”, &nbr);

20:

21: if (nbr == 0)

22: break;

23: func1(nbr);

24: }

25: return 0;

26: }

27:

28: void func1(int val)

29: {

30: /* The pointer to function. */

31:

32: void (*ptr)(void);

33:

34: if (val == 1)

35: ptr = one;

36: else if (val == 2)

37: ptr = two;

38: else

39: ptr = other;

40:

41: ptr();

42: }

43:

44: void one(void)

45: {

46: puts(“You entered 1.”);

47: }

48:

49: void two(void)

50: {

51: puts(“You entered 2.”);

52: }

53:

54: void other(void)

55: {

56: puts(“You entered something other than 1 or 2.”);

57: }

Enter an integer between 1 and 10, 0 to exit:

2

You entered 2.

Enter an integer between 1 and 10, 0 to exit:

9

410 Day 15

LISTING15.9 continued

INPUT/

OUTPUT

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