max() Function in C++

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This C++ program prints maximum of two values using max algorithm. The function takes two objects as the parameters by const reference and the third parameter is optional which is a predicate. The predicate can be used for objects which can not be compared like primitive datatypes and hence can be compared on the basis of some key.

Here is the source code of the C++ program which prints maximum of two values using max algorithm. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /*
  2.  * C++ Program to print maximum of two values using max() algorithm
  3.  */
  4. #include <iostream>
  5. #include <algorithm>
  6.  
  7. int main()
  8. {
  9.     int a, b;
  10.  
  11.     std::cout << "Enter a = ";
  12.     std::cin >> a;
  13.     std::cout << "\nEnter b = ";
  14.     std::cin >> b;
  15.     std::cout << "\nMaximum of a and b is "
  16.               << std::max(a, b) << std::endl; 
  17. }

$ a.out
Enter a = 10
Enter b = 20
Maximum of a and b is 20
$ a.out
Enter a =-40
Enter b = 20
Minimum of a and b is 20

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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