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#include <iostream>
#include <string>
using namespace std;
int main()
{
string s1 ;
s1 = "1234567890";
for(int i=0; i<s1.length(); i++)
cout<<s1[i]<<" ";
cout<<endl;
s1[5] = ‘5‘;
cout<<s1<<endl;
return 0;
}
输出123455789
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原文地址:http://www.cnblogs.com/flywolf601/p/5877172.html