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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. double calculate_area(double a, double b, double c) {
  5.     double s = (a + b + c) / 2; 
  6.     double total = sqrt(s * (s - a) * (s - b) * (s - c)); 
  7.     return total;
  8. }
  9.  
  10. int main() {
  11.     double a, b, c;
  12.  
  13.     printf("辺の長さ a, b, c : ");
  14.     scanf("%lf %lf %lf", &a, &b, &c); 
  15.  
  16.     double total = calculate_area(a, b, c);
  17.  
  18.     printf("面積: %lf\n", total); 
  19.  
  20.     return 0;
  21. }
Success #stdin #stdout 0s 5276KB
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Standard input is empty
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辺の長さ a, b, c : 面積: 0.000000
https://ideone.com/eIwLl2
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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