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c，c++ little knowledge

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1. 把一个string型字符串全部转成小写。

 

    注释：可以用STL中的<algorithm>中的transform()函数。

 

string s = "Picky";
transform(s.begin(), s.end(), s.begin(), tolower);
cout<<s<<endl;

 

result:

            picky

 

 

 

 

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