#include<cctype>
#include<iostream.h>
string str("STEVEN");
for (string::size_type st = 0; st != str.size(); st++)
{
str[st] = tolower(str[st]); //把大写转化为小写
cout << str[st] ;
}
C++实现大写字母向小写字母的转化
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2022-06-16
#include<cctype>
#include<iostream.h>
string str("STEVEN");
for (string::size_type st = 0; st != str.size(); st++)
{
str[st] = tolower(str[st]); //把大写转化为小写
cout << str[st] ;
}
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