prog1.cpp

来自「C++语言程序设计题典」· C++ 代码 · 共 11 行

#include <iostream.h>
template <class T>
T abs(T x)
{
	return (x>0?x:-x);
}
void main()
{
	cout << abs(-3) << "," << abs(-2.6) << endl;
}