思路很清晰的c++课件。例子很简明

				例2.10 函数重载
				
				#include 
				
				int square(int x){  return x*x;}
				float square(float x){return x*x;}
				double square(double x){return x*x;}
				
				int main()
				{	int i=12;
					float f=3.4f;
					double d=5.67;
					cout					cout					cout					return 0;
				}