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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. struct user {
  5. 	char name[6];
  6. 	char pass[6];
  7. };
  8.  
  9. int main() {
  10. 	//таблица юзеров
  11. 	struct user users[] = {
  12. 		{"",""},				//буфер для текущего юзера
  13. 		{"vasya", "pup"}
  14. 	};
  15.  
  16. 	for(size_t count = 3;count > 0;) {
  17. 		printf("user password:"); scanf("%s%s", users[0].name, users[0].pass);
  18.  
  19. 		for(size_t i = 1; i<sizeof(users)/sizeof(*users); i++) {
  20. 			printf("\nTry to %s:%s vs %s:%s\n", users[0].name, users[0].pass, users[i].name, users[i].pass);
  21. 			if (strcmp(users[0].name, users[i].name)==0 && strcmp(users[0].pass, users[i].pass)==0) {
  22. 				printf("access granted\n");
  23. 				return 0;
  24. 			}
  25. 		}
  26. 		printf("password is invalid. you cant try %d more time(s)\n", --count);
  27. 	}
  28.  
  29. 	printf("access denied!");
  30. 	return 1;
  31. }
  32.  
Success #stdin #stdout 0s 4332KB
comments (?)
stdin
copy 
petya 012345ABCDEFG
ABCDEF G
stdout
copy 
user password:
Try to petya:012345ABCDEFG vs ABCDEFG:G
password is invalid. you cant try 2 more time(s)
user password:
Try to ABCDEFG:G vs ABCDEFG:G
access granted
https://ideone.com/ZeTpe4
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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