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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4.  
  5. int main( void )
  6. {
  7.     int i, mask, score;
  8. 	unsigned int bits;
  9.  
  10. 	srand(time(NULL));
  11. 	bits = 0;
  12. 	for( i = 0 ; i < 20 ; i++ ){
  13. 		bits += rand() % 2;
  14. 		bits <<= 1;
  15. 	}
  16.  
  17. 	score = 0;
  18. 	mask = 0x1F;
  19. 	for( i = 0 ; i < 4 ; i++ ){
  20. 		switch ( bits >> i*5 & mask ){
  21. 			case 0x01:case 0x02:case 0x04:
  22. 			case 0x06:case 0x08:case 0x09:
  23. 			case 0x0B:case 0x0D:case 0x0E:
  24. 			case 0x10:case 0x12:case 0x14:
  25. 			case 0x15:case 0x17:case 0x19:
  26. 			case 0x1A:case 0x1C:case 0x1E:
  27. 				score += 10;
  28. 				break;
  29. 		}
  30. 	}
  31. 	printf("乱数(10）%d\n", bits);
  32. 	printf("%d点\n", score);
  33.  
  34. 	return 0;
  35. }
Success #stdin #stdout 0.01s 1720KB
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乱数(10）1138906
30点
https://ideone.com/05htNf
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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