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Adding update function

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This commit is contained in:
Denis Nuțiu 2016-04-14 21:51:45 +03:00
parent 42fdfb27a8
commit 5732564492
2 changed files with 16 additions and 4 deletions
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20
lab8/2.c
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@ -46,7 +46,18 @@ void delete_entry(FILE * file, unsigned entry_no) {
}
void modify_entry(Database * entry) {
printf("Enter new repair type:\n");
printf("Current: %s\n> ", entry->repair_type);
scanf("%50[a-zA-Z ]", entry->repair_type);
printf("Enter new price:\n");
printf("Current: %d\n> ", entry->price);
scanf("%d", &entry->price);
printf("Enter new investment:\n");
printf("Current: %d\n> ", entry->investment);
scanf("%d", &entry->investment);
printf("Enter new profit:\n");
printf("Current: %d\n> ", entry->profit);
scanf("%d", &entry->profit);
}
void update_entry(FILE * file, unsigned entry_no) {
@ -55,9 +66,10 @@ void update_entry(FILE * file, unsigned entry_no) {
for( int i = 0; fread(&entry, sizeof(Database), 1, file); i++ ) {
if ( i == entry_no ) {
printf("Entry found!\n");
seek(file, -sizeof(Database), SEEK_CUR);
fseek(file, -sizeof(Database), SEEK_CUR);
modify_entry(&entry);
fwrite(&entry, sizeof(Database), 1, file);
printf("RETSwrote %s\n", entry.repair_type);
}
}
}
@ -130,9 +142,9 @@ int main(void) {
// insert_entry(fp, &nokia);
// }
Database e;
read_entry(fp, &e);
// read_entry(fp, &e);
display_database_entries(fp);
modify_entry(&e);
update_entry(fp, 2);
display_database_entries(fp);
// delete_entry(fp, 1);
// display_database_entries(fp);

BIN
lab8/data.bdb
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