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  1. #include <stdio.h>
  2. #include <math.h>
  3. int main(void) {
  4. // your code goes here
  5. double a,b,c,s,area;
  6. scanf("%lf,%lf,%lf",&a,&b,&c);
  7. s=(a+b+c)/2;
  8. area=(float)sqrt(s*(s-a)*(s-b)*(s-c));
  9. printf("area=%d",area);
  10. return 0;
  11. }
Success #stdin #stdout 0s 5316KB
stdin
3,4,5
stdout
area=-1529141872