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  1.  
  2. #include<stdio.h>
  3. union u
  4. {
  5.    int var;
  6.    unsigned char str[4];
  7. };
  8. int main()
  9. {
  10.    unsigned char tmp;
  11.    union u uObj;uObj.var = 3;
  12.    tmp = uObj.str[1];
  13.    uObj.str[1] = uObj.str[0];
  14.    uObj.str[0] = tmp;
  15.    printf("%d", uObj.var);
  16.    return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5276KB
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768
https://ideone.com/cbL72E
language:
C (gcc 8.3)
created:
56 days ago
visibility:
public

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