Sams Teach Yourself C in 21 Days

622 Week 3

94: return(ch);

95: }

96:

97: /****************************************************

98: Function: get_data()

99: *****************************************************/

100:

101: void get_data(FILE *fp, char *progname, char *filename)

102: {

103: int cont = YES;

104:

105: while( cont == YES )

106: {

107: printf(“\n\nPlease enter information: “ );

108:

109: printf(“\n\nEnter first name: “);

110: gets(rec.fname);

111: printf(“\nEnter middle name: “);

112: gets(rec.mname);

113: printf(“\nEnter last name: “);

114: gets(rec.lname);

115: printf(“\nEnter phone in 123-4567 format: “);

116: gets(rec.phone);

117:

CH 16 118: if (fseek( fp, 0, SEEK_END ) == 0)

119: if( fwrite(&rec, 1, sizeof(rec), fp) != sizeof(rec))

120: {

121: fprintf( stderr, “%s(%d) Error writing to file %s”,

122: progname,__LINE__, filename);

123: exit(2);

124: }

125: cont = continue_function();

126: }

127: }

128:

129: /********************************************************

130: Function: display_report()

131: Purpose: To print out the formatted names and numbers

132: of people in the file.

133: *********************************************************/

134:

135: void display_report(FILE *fp)

136: {

137: time_t rtime;

138: int num_of_recs = 0;

139:

140: time(&rtime);

141:

142: fprintf(stdout, “\n\nRun Time: %s”, ctime( &rtime));

143: fprintf(stdout, “\nPhone number report\n”);

144:

LISTINGR3.1 continued

34 448201x-W3R 8/13/02 11:22 AM Page 622