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  1. #include <stdio.h>
  2. #include<math.h>
  3. int main(void){
  4.     // you 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 5304KB
comments (?)
stdin
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a,b,c:9 10 11↙
stdout
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input a,b,c:area = -nan
https://ideone.com/deykAR
language:
C (gcc 8.3)
created:
23 hours ago
visibility:
public

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