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  1. #include <stdio.h>
  2.  
  3. struct DB {
  4. 	char	name[20];
  5. 	int	age;
  6. 	char	hometown[20];
  7. };
  8.  
  9. int main()
  10. {
  11. 	struct DB db[10];
  12. 	int i, n, count = 0;
  13.  
  14. 	while (1) {
  15. 		printf(" 1:create a database\n");
  16. 		printf(" 2:show the database\n");
  17. 		printf(" 3:exit\n");
  18. 		printf(" n=");
  19. 		scanf("%d", &n);
  20. 		printf("%d\n", n);
  21. 		switch (n) {
  22. 		case 1:
  23. 			printf(" Please input name, age and hometown\n");
  24. 			printf("db[%d].name=", count);
  25. 			scanf("%19s", db[count].name);
  26. 			printf("db[%d].age=", count);
  27. 			scanf("%d", &db[count].age);
  28. 			printf("db[%d].hometown=", count);
  29. 			scanf("%19s", db[count].hometown);
  30. 			count++;
  31. 			break;
  32. 		case 2:
  33. 			printf(" name age homwtown\n");
  34. 			for (i = 0; i < count; i++) {
  35. 				printf(" %s %d %s\n", db[i].name, db[i].age, db[i].hometown);
  36. 			}
  37. 			break;
  38. 		case 3:
  39. 			return 0;
  40. 		}
  41. 	}
  42. }
  43.  
Success #stdin #stdout 0.01s 1680KB
comments (?)
stdin 
1
Tom
19
Tokyo
1
Alice
18
Osaka
2
3
stdout 
 1:create a database
 2:show the database
 3:exit
 n=1
 Please input name, age and hometown
db[0].name=db[0].age=db[0].hometown= 1:create a database
 2:show the database
 3:exit
 n=1
 Please input name, age and hometown
db[1].name=db[1].age=db[1].hometown= 1:create a database
 2:show the database
 3:exit
 n=2
 name age homwtown
 Tom 19 Tokyo
 Alice 18 Osaka
 1:create a database
 2:show the database
 3:exit
 n=3
https://ideone.com/MSopT
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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