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  1. #include <stdio.h>
  2. #include<math.h>
  3. int main(void) {
  4. 	// your code goes here
  5. 	float a,b,c,s,area;
  6. 	printf("Input a,b,c:");
  7. 	scanf("%f%f%f",&a,&b,&c);
  8. 	s=(a+b+c)/2;
  9. 	area=(float)sqrt(s*(s-a)*(s-b)*(s-c));
  10. 	printf("area=%f\n",area);
  11. 	return 0;
  12. }
  13.  
Success #stdin #stdout 0s 5328KB
comments (?)
stdin
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Inputa,b,c:3,4,5
stdout
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Input a,b,c:area=-nan
https://ideone.com/1XTbXc
language:
C (gcc 8.3)
created:
1 hour ago
visibility:
public

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