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  1. #include<stdio.h>
  2.  
  3. int main(void)
  4. { int x=123;
  5.   int y=456;
  6.   int sw;
  7.  
  8.   printf("x=%d\n",x);
  9.   printf("y=%d\n",y);
  10.  
  11.   printf("変更するのは？[0...x/1...y]=");
  12.   scanf("%d",&sw);
  13.   printf("%d\n",sw);
  14.  
  15.   int *p;
  16.   if(sw==0) p=&x;
  17.   else p=&y;
  18.  
  19.   *p=999;
  20.  
  21.   printf("x=%d\n",x);
  22.   printf("y=%d\n",y);
  23.   return 0;
  24. }
Success #stdin #stdout 0s 5276KB
comments (?)
stdin
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Standard input is empty
stdout
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x=123
y=456
変更するのは？[0...x/1...y]=0
x=999
y=456
https://ideone.com/DXzr8U
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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