这应该是c++相对于c很有进步性的一个新元素,应该是从函数重载发展而来的,难度倒是没有,也挺好理解,主要是熟练。贴一个超小的模板程序。
//function template
#include <iostream.h>
template < class T >
T maximum( T a, T b, T c )
{
T max = a;
if ( b > max )
max = b;
if ( c > max )
max = c;
return max;
}
int main()
{
int int1, int2, int3;
cout << "input three integer values: ";
cin >> int1 >> int2 >> int3;
cout << "the maximum number is: "
<< maximum( int1, int2, int3 );
float in1, in2, in3;
cout << "/ninput three float values: ";
cin >> in1 >> in2 >> in3;
cout << "the maximum number is: "
<< maximum( in1, in2, in3 ) << endl;
return 0;
}