str2.cpp
来源: String 类和标准模板库
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原始代码预览
// str2.cpp -- capacity() and reserve()
#include <iostream>
#include <string>
int main()
{
using namespace std;
string empty;
string small = "bit";
string larger = "Elephants are a girl's best friend";
cout << "Sizes:\n";
cout << "\tempty: " << empty.size() << endl;
cout << "\tsmall: " << small.size() << endl;
cout << "\tlarger: " << larger.size() << endl;
cout << "Capacities:\n";
cout << "\tempty: " << empty.capacity() << endl;
cout << "\tsmall: " << small.capacity() << endl;
cout << "\tlarger: " << larger.capacity() << endl;
empty.reserve(50);
cout << "Capacity after empty.reserve(50): "
<< empty.capacity() << endl;
// cin.get();
return 0;
}
运行结果 / 调试信息
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