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  1. #include <stdio.h>
  2. int func(int num){
  3. 	if(num==1){
  4. 	num = 2;
  5. 	return num;
  6. 	}
  7. 	if(num==2){
  8. 	num = 3;
  9. 	return num;
  10. 	}
  11. 	if(num==3){
  12. 	num = 5;
  13. 	return num;
  14. 	}
  15. 	if(num==4){
  16. 	num = 7;
  17. 	return num;
  18. 	}
  19. 	if(num==5){
  20. 	num = 11;
  21. 	return num;
  22. 	}
  23. 	else
  24. 	num = -1;
  25. 	return num;
  26. }
  27.  
  28. int main(void){
  29. int num, prime;
  30. scanf("%d", &num);
  31. prime = func(num);
  32. if(prime > 0)
  33. printf("%d番目の素数は%d\n", num,
  34. prime);
  35. else
  36. printf("未対応の値です\n");
  37. return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5308KB
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stdin
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3
stdout
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3番目の素数は5
https://ideone.com/B0Cz4M
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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