Sams Teach Yourself C in 21 Days

In Review 169

44: {

CH 05 45: cont = display_instructions();

46:

CH 04 47: if ( cont == YES )

48: {

CH 05 49: get_data();

CH 05 50: display_report();

51: }

CH 04 52: else

CH 07 53: printf( “\nProgram Aborted by User!\n\n”);

54:

55: return 0;

56: }

CH 02 57: /*-----------------------------------------------------------*

58: * Function: display_instructions() *

59: * Purpose: This function displays information on how to *

60: * use this program and asks the user to enter 0 *

61: * to quit, or 1 to continue. *

62: * Returns: NO - if user enters 0 *

63: * YES - if user enters any number other than 0 *

64: *-----------------------------------------------------------*/

CH 05 65: int display_instructions( void )

66: {

CH 07 67: printf(“\n\n”);

68: printf(“\nThis program enables you to enter up to 99 people\’s “);

69: printf(“\nincomes and birthdays. It then prints the incomes by”);

70: printf(“\nmonth along with the overall income and overall average.”);

71: printf(“\n”);

72:

CH 05 73: cont = continue_function();

CH 05 74: return( cont );

75: }

CH 02 76: /*-------------------------------------------------------------*

77: * Function: get_data() *

78: * Purpose: This function gets the data from the user. It *

79: * continues to get data until either 100 people are *

80: * entered, or until the user enters 0 for the month.*

81: * Returns: nothing *

82: * Notes: This allows 0/0/0 to be entered for birthdays in *

83: * case the user is unsure. It also allows for 31 *

84: * days in each month. *

85: *-------------------------------------------------------------*/

86:

CH 05 87: void get_data(void)

88: {

CH 06 89: for ( cont = YES, ctr = 0; ctr < MAX && cont == YES; ctr++ )

90: {

CH 07 91: printf(“\nEnter information for Person %d.”, ctr+1 );

92: printf(“\n\tEnter Birthday:”);

93:

LISTINGR1.1 continued

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