streamdemo.cpp

压缩包里有教材<<C++模式设计-基于QT4开源跨平台开发框架>>所有源码

#include <iostream>

int main() {
    using namespace std;
    int num1(1234), num2(2345) ;
    cout << oct << num2 << '\t'
            << hex << num2 << '\t'
             << dec << num2 
             << endl;
    cout << (num1 < num2) << endl;
    cout << boolalpha
             << (num1 < num2)
             << endl;
    double dub(1357);
    cout << dub << '\t'
            << showpos << dub << '\t'
            << showpoint << dub 
            << endl;
    dub = 1234.5678;
    cout << dub << '\t'
            << fixed << dub << '\t'
            << scientific << dub << '\n'
            << noshowpos << dub 
            << endl;
}
/*OUT
4451    929     2345
1
true
1357    +1357   +1357.00
+1234.57        +1234.567800    +1.234568e+03   
1.234568e+03
*/