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  1. #include <stdio.h>
  2. #include <math.h> 
  3. struct Coordinate {
  4.     double x;
  5.     double y;
  6.     double z;
  7. };
  8.  
  9. int main() {
  10.  
  11.     struct Coordinate A = {1.0, 5.0, 2.0};
  12.     struct Coordinate B = {5.0, 3.0, 1.0};
  13.     struct Coordinate C = {2.0, 8.0, 4.0};
  14.     struct Coordinate origin = {0.0, 0.0, 0.0}; 
  15.  
  16.     double distAB, distCO;
  17.  
  18.  
  19.     distAB = sqrt(pow(B.x - A.x, 2) + pow(B.y - A.y, 2) + pow(B.z - A.z, 2));
  20.  
  21.  
  22.     distCO = sqrt(pow(C.x - origin.x, 2) + pow(C.y - origin.y, 2) + pow(C.z - origin.z, 2));
  23.  
  24.  
  25.     printf("点A-B間の距離: %f\n", distAB);
  26.     printf("点C-原点間の距離: %f\n", distCO);
  27.  
  28.     if (distAB > distCO) {
  29.         printf("長い方の距離は 点A-B間 で、値は %f です。\n", distAB);
  30.     } else {
  31.         printf("長い方の距離は 点C-原点間 で、値は %f です。\n", distCO);
  32.     }
  33.  
  34.     return 0;
  35. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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点A-B間の距離: 4.582576
点C-原点間の距離: 9.165151
長い方の距離は 点C-原点間 で、値は 9.165151 です。
https://ideone.com/bzGkDz
language:
C99 (gcc 8.3)
created:
14 hours ago
visibility:
public

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