Overload functions with two parameters : function overload « Function « C++ Tutorial

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2. Function
3. function overload

#include <iostream>  
using namespace std;  
 
int min(int a, int b);     // min() for ints 
char min(char a, char b);  // min() for chars 
int * min(int *a, int *b); // min() for int pointers 
 
int main()  
{  
  int i=10, j=22; 
 
  cout << "min('X', 'a'): " << min('X', 'a') << "\n"; 
  cout << "min(9, 3): " << min(9, 3) << "\n"; 
  cout << "*min(&i, &j): " << *min(&i, &i) << "\n"; 
  
  return 0;  
} 
 
// min() for ints.  Return the smallest value. 
int min(int a, int b) 
{ 
  if(a < b) return a; 
  else return b; 
} 
 
// min() for chars -- ignore case. 
char min(char a, char b) 
{ 
  if(tolower(a) < tolower(b)) return a; 
  else return b; 
} 
 
/* 
   min() for int pointers.  
   Compare values and return pointer to smallest value. 
*/ 
int * min(int *a, int *b) 
{ 
  if(*a < *b) return a; 
  else return b; 
}

min('X', 'a'): a
min(9, 3): 3
*min(&i, &j): 10