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  1. #include <stdio.h>
  2. #include<math.h>
  3. int main(void)
  4. {
  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 5316KB
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stdin
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3,4,5
stdout
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Input a,b,c:area=6.000000
https://ideone.com/euaYHy
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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