c language learning ---- trap summary

1 macro definition

　　Only the most basic macro replacement, rather than operations.

　　#define ONE 1

　　#define TWO=ONE+ONE

　　int a = 10,b=20,c;

　　c=ONE +TWO *20 + a;

　　

　　c value would it be? ? ? Be sure to remember to replace rather than operations. That is, the above is equivalent to c c = ONE + ONE + ONE * 20 + a;    

 

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