Life before templates

onmacros.cpp

#include<iostream>
/** Example is very simple, see LibreOffice code for
real world/complicated examples.
Code is unnecessarily bloated to be clear.
*/

//Macro to create template like functions
#define ADD_FUNC(ret,typedesc) \
typedesc add##ret(typedesc a, typedesc b){\
		typedesc c; \
		c = a + b; \
		return c;\
	}

//Normal macro
#define MACRO_ADD(a,b) (a+b)
#define TEN_ADD(a) MACRO_ADD(a,10)

using namespace std;

//Creating our functions
ADD_FUNC(int,int);
ADD_FUNC(float,float);

//Normal template code
template <typename T>
T subtract(T a, T b){
	T c;
	c = a - b;
	return c;
}

int main(){
	//Call our macro created functions
	cout<<addint(4,5)<<endl;
	cout<<addfloat(4.3,5.2)<<endl;
	
	//Call our template function
	cout<<subtract(8.4,3.1)<<endl;
	cout<<subtract(9,2)<<endl;
	
	//Call normal macro
	cout<<MACRO_ADD(1,5)<<endl;
	cout<<MACRO_ADD(2.2,3.1)<<endl;
	
	cout<<TEN_ADD(5)<<endl;
}