📄 printf.txt
字号:
Convention Constuctor:happy
Convention Constuctor:birthday
Convention Constuctor:
s1 is "happy"; s2 is "birthday"; s3 is empty
The results of comparing s2 and s1:
s2==s1 yields0
s2!=s1 yields1
s2>s1 yields0
s 2<s1 yields1
s2>=s1 yields0
s2<=s1 yields1
Testing!s3:
s3 is empty; assigning s1 to s3;
operator=called
s3 is "happy"
s1+=s2 yieldss1=happybirthday
s1+="to you"yields
Convention Constuctor:to you
Destructor:to you
s1=happybirthdayto you
Convention Constuctor:
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