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ULLONG_MAX constant with example in C++

C++ ULLONG_MAX constant: Here, we are going to learn about the ULLONG_MAX macro constant of climits header in C++.
Submitted by IncludeHelp, on May 03, 2019

C++ ULLONG_MAX macro constant

ULLONG_MAX constant is a macro constant which is defied in climits header, it is used to get the maximum value of an unsigned long long int object, it returns the maximum value that an unsigned long long int object can store, which is 18446744073709551615 (on 32 bits compiler).

Note:

  • The actual value depends on the compiler architecture or library implementation.
  • We can also use <limits.h> header file instead of <climits> header as ULLONG_MAX constant is defined in both of the libraries.

Syntax of ULLONG_MAX constant:

    ULLONG_MAX

Example:

    Constant call:
    cout << ULLONG_MAX;

    Output:
    18446744073709551615

C++ code to demonstrate example of ULLONG_MAX constant with climits header

// C++ code to demonstrate example of 
// ULLONG_MAX constant with climits header
#include<iostream>
#include<climits>
using namespace std;

int main()
{
   //prinitng the value of ULLONG_MAX
    cout<<"ULLONG_MAX: "<<ULLONG_MAX<<endl;
    return 0;
}

Output

ULLONG_MAX: 18446744073709551615

C++ code to demonstrate example of ULLONG_MAX constant with limits.h header file

// C++ code to demonstrate example of 
// ULLONG_MAX constant with <limits.h> header file
#include<iostream>
#include<limits.h>
using namespace std;

int main()
{
   //prinitng the value of ULLONG_MAX
    cout<<"ULLONG_MAX: "<<ULLONG_MAX<<endl;
    return 0;
}

Output

ULLONG_MAX: 18446744073709551615





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