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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5. 	int i,j,k;
  6.  
  7. 	while (1) {
  8. 		printf("数字を入力してください（-1で終了）\n");
  9. 		scanf("%d", &k);
  10. 		if(k<0) break;
  11.  
  12. 		j=1;
  13. 		for(i=1;i<=k;i++){
  14. 			j=i*j;
  15. 		}
  16. 		printf("j=%d\n",j);
  17. 	}
  18. 	return 0;
  19. }
  20.  
Success #stdin #stdout 0.01s 1724KB
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stdin
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-1
stdout
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数字を入力してください（-1で終了）
j=6
数字を入力してください（-1で終了）
https://ideone.com/4vo41
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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