æå¤ç§æ¹æ³ï¼
1 æ常ç¨çï¼ä¸é´åéæ³ã
使ç¨ç¬¬ä¸ä¸ªä¸é´åé交æ¢a,bçå¼ã
char a='-', b='+',c;
c = a;
a = b;
b = c;
å®ç°aï¼bå¼ç交æ¢ã
2 å©ç¨å åæ³äº¤æ¢ã
交æ¢a,bå¼å¯ä»¥ç¨
a+=b;
b=a-b;
a=a-b;
3 å©ç¨å¼æ交æ¢ï¼
交æ¢a,bå¼ç代ç 为ï¼
a^=b;
b=a^b;
a=a^b;
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