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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	double pi=3.14;//小数の定義
  5. 	double r=2.5;
  6. 	double s;
  7. 	s=r*r*pi;
  8. 	printf("%f\n",s);
  9. 	int num = 3;
  10. 	num = num + 1;
  11. 	num += 1;
  12.  
  13. 	printf("%f\n",s*num);//整数と小数をかけると小数になります
  14. 	printf("%d",num);
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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19.625000
98.125000
5
https://ideone.com/pDpQnj
language:
C (gcc 8.3)
created:
10 days ago
visibility:
public

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