Exercise 2.5

Implement an overloaded set of max() functions to accept (a) two integers, (b) two floats, (c) two strings, (d) a vector of integers, (e) a vector of floats, (f) a vector of strings, (g) an array of integers and an integer indicating the size of the array, (h) an array of floats and an integer indicating the size of the array, and (i) an array of strings and an integer indicating the size of the array. Again, write a main() function to exercise these functions.

#include <string> 


#include <vector> 


#include <algorithm> 





using namespace std; 





inline int max( int t1, int t2 ) 


       { return t1 > t2 ? t1 : t2; } 





inline float max( float t1, float t2 ) 


       { return t1 > t2 ? t1 : t2; } 





inline string max( const string& t1, const string& t2 ) 


       { return t1 > t2 ? t1 : t2; } 





inline int max( const vector<int> &vec ) 


       { return *max_element( vec.begin(), vec.end() ); } 





inline float max( const vector<float> &vec ) 


       { return *max_element( vec.begin(), vec.end() ); } 





inline string max( const vector<string> &vec ) 


       { return *max_element( vec.begin(), vec.end() ); } 





inline int max( const int *parray, int size ) 


       { return *max_element( parray, parray+size ); } 





inline float max( const float *parray, int size ) 


       { return *max_element( parray, parray+size ); } 





inline string max( const string *parray, int size ) 


       { return *max_element( parray, parray+size ); } 





int main() { 


    string sarray[]={ "we", "were", "her", "pride", "of", "ten" }; 


    vector<string> svec( sarray, sarray+6 ); 





    int iarray[]={ 12, 70, 2, 169, 1, 5, 29 }; 


    vector<int> ivec( iarray, iarray+7 ); 





    float farray[]={ 2.5, 24.8, 18.7, 4.1, 23.9 }; 


    vector<float> fvec( farray, farray+5 ); 





    int imax = max( max( ivec ), max( iarray, 7 )); 


    float fmax = max( max( fvec ), max( farray, 5 )); 


    string smax = max( max( svec ), max( sarray, 6 )); 





    cout << "imax should be 169  -- found: " << imax << '\n' 


         << "fmax should be 24.8 -- found: " << fmax << '\n' 


         << "smax should be were -- found: " << smax << '\n'; 


} 

When compiled and executed, this program generates the following:

imax should be 169  -- found: 169 


fmax should be 24.8 -- found: 24.8 


smax should be were -- found: were