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  1. #include <stdio.h>
  2.  
  3. // 配列要素を入れ替える関数
  4. void swap(int *x, int *y) {
  5.     int temp = *x; // 一時的な変数に値を保存
  6.     *x = *y;       // xの値をyにコピー
  7.     *y = temp;     // 保存しておいたxの値をyにコピー
  8. }
  9.  
  10. int main() {
  11.     int data1[5] = {1, 2, 3, 4, 5}; // 配列data1の宣言と初期化
  12.     int data2[5] = {6, 7, 8, 9, 10}; // 配列data2の宣言と初期化
  13.  
  14.     printf("Before swapping:\n");
  15.     printf("data1: ");
  16.     for (int i = 0; i < 5; i++) {
  17.         printf("%d ", data1[i]);
  18.     }
  19.     printf("\ndata2: ");
  20.     for (int i = 0; i < 5; i++) {
  21.         printf("%d ", data2[i]);
  22.     }
  23.     printf("\n");
  24.  
  25.     // 配列の要素を入れ替える
  26.     for (int i = 0; i < 5; i++) {
  27.         swap(&data1[i], &data2[i]);
  28.     }
  29.  
  30.     printf("After swapping:\n");
  31.     printf("data1: ");
  32.     for (int i = 0; i < 5; i++) {
  33.         printf("%d ", data1[i]);
  34.     }
  35.     printf("\ndata2: ");
  36.     for (int i = 0; i < 5; i++) {
  37.         printf("%d ", data2[i]);
  38.     }
  39.     printf("\n");
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5280KB
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stdin
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Standard input is empty
stdout
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Before swapping:
data1: 1 2 3 4 5 
data2: 6 7 8 9 10 
After swapping:
data1: 6 7 8 9 10 
data2: 1 2 3 4 5
https://ideone.com/l33HAo
language:
C99 (gcc 8.3)
created:
28 days ago
visibility:
public

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