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INT_MAX constant with example in C++

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

C++ INT_MAX macro constant

INT_MAX constant is a macro constant which is defied in climits header, it is used to get the maximum value of a signed int object, it returns the maximum value that a signed int object can store, which is 2147483647 (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 INT_MAX constant is defined in both of the libraries.

Syntax

Syntax of INT_MAX constant:

INT_MAX

Sample Input and Output

Constant call:
cout << INT_MAX;

Output:
2147483647

Example 1

C++ code to demonstrate example of INT_MAX constant with climits header:

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

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

Output

INT_MAX: 2147483647

Example 2

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

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

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

Output

INT_MAX: 2147483647


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