目录
1、字符串流(字符串缓冲区)
2、istreamstring
2、ostringstream
3、stringstream
1、字符串流(字符串缓冲区)
相对于程序中变量而言的输入输出。
1)istringstream类用于执行C++风格的字符串流的输入操作;
2)ostringstream类用于执行C++风格的字符串流的输出操作;
3)strstream类同时可以支持C++风格的字符串流的输入输出操作。
2、istreamstring
#include <iostream>
#include <sstream>
using namespace std;
int main()
{
istringstream is;
is.str("1 abc");
cout << is.str() << endl;
int a = 0;
char ch1, ch2, ch3;
is >> a >> ch1 >> ch2 >> ch3;
cout << a << ends
<< ch1 << ends
<< ch2 << ends
<< ch3 << endl;
cout << is.str() << endl;
is.str("2 d");
cout << is.str() << endl;
is.clear();
int b = 0;
char ch4;
is >> b;
is >> ch4;
cout << b << ends << ch4 << endl;
char ch5 = is.peek();
cout << ch5 << endl;
is.putback(ch4);
is >> ch5;
cout << ch5 << endl;
is.str("");
cout << is.str() << endl;
system("pause");
}
2、ostringstream
#include <iostream>
#include <sstream>
using namespace std;
int main()
{
ostringstream os1;
ostringstream os2("1 abc");
os1 << os2.str();
cout << os1.str() << ends << os2.str() << endl;
os2 << "asd";
cout << os2.str() << endl;
os1.put('d');
cout << os1.str() << endl;
os1.str(" ");
cout << os1.str() << endl;
system("pause");
}
3、stringstream
#include <iostream>
#include <sstream>
using namespace std;
int main()
{
stringstream ios;
ios << "1 abc";
ios << " 2 def";
int a, b;
char ch1, ch2, ch3;
a = b = 0;
ch1 = ch2 = ch3 = ' ';
string str;
cout << ios.str() << endl;
ios >> a >> ch1 >> ch2 >> ch3 >> b >> str;
cout << a << ends << ch1 << ends << ch2 << ends << ch3 << ends
<< b << ends << str << endl;
system("pause");
}