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  1. /* Helloプログラム */
  2.  
  3. #include <stdio.h>
  4.  
  5. main()
  6. {
  7. 	float w;
  8. 	float h;
  9. 	float a;
  10.  
  11. 	w = 1.0;
  12. 	h = 1.0;
  13. 	a = w * h/2.0;
  14.  
  15. 		printf("%f",a);
  16. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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0.500000
https://ideone.com/Uhf878
hello program
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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