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  1. #include<stdio.h>
  2.  
  3. struct s{
  4. int x;
  5. int y;
  6. };
  7.  
  8. int main(void)
  9. {
  10. struct s a={10,20};
  11. struct s b={10,20};
  12. struct s c={30,40};
  13.  
  14. if(a.x==b.x)a.x=c.x;
  15. printf("a.x = %d\n",a.x);
  16.  
  17. a=b;
  18.  
  19. //if(a ==b)a=c;
  20. printf("a.y = %d\n",a.y);
  21.  
  22. return 0;
  23. }
Success #stdin #stdout 0s 5300KB
stdin
Standard input is empty
stdout
a.x = 30
a.y = 20