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@yifu
Created September 21, 2012 15:32
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#include <iostream>
int main()
{
char pre [4] = "123";
char buf [4] = "123";
char post[4] = "123";
std::cin.width(3);
std::cin >> buf;
std::cout << pre << "," << buf << "," << post << std::endl;
}
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