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  1. #include <stdio.h>
  2.  
  3. void swap_pointer(int **pp) {
  4.     int *temp; 
  5.  
  6.  
  7.     temp = *pp;        
  8.     *pp = *(pp + 1);   
  9.     *(pp + 1) = temp;  
  10. }
  11.  
  12. int main(void) {
  13.     int a = 10;
  14.     int b = 20;
  15.  
  16.  
  17.     int *p[2] = {&a, &b}; 
  18.  
  19.  
  20.     printf("p[0] が指す値: %d\n", *p[0]); 
  21.     printf("p[1] が指す値: %d\n", *p[1]);
  22.  
  23.  
  24.     swap_pointer(p); 
  25.  
  26.     printf(" 入れ替え後 \n");
  27.  
  28.     printf("p[0] が指す値: %d\n", *p[0]); 
  29.     printf("p[1] が指す値: %d\n", *p[1]); 
  30.  
  31.     return 0;
  32. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin 
Standard input is empty
stdout 
p[0] が指す値: 10
p[1] が指す値: 20
 入れ替え後 
p[0] が指す値: 20
p[1] が指す値: 10
https://ideone.com/4q4Atd
language:
C99 (gcc 8.3)
created:
1 day ago
visibility:
public

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