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CHAR_MAX constant with example in C++

C++ CHAR_MAX constant: Here, we are going to learn about the CHAR_MAX macro constant of climits header in C++.
Submitted by IncludeHelp, on May 01, 2019

C++ CHAR_MAX macro constant

CHAR_MAX constant is a macro constant which is defied in climits header, it is used to get the maximum value of a char object, it returns the maximum value that a char object can store, which is either 127 (SCHAR_MAX) or 255 (UCHAR_MAX).

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 CHAR_MAX constant is defined in both of the libraries.

Syntax

Syntax of CHAR_MAX constant:

CHAR_MAX

Sample Input and Output

Constant call:
cout << CHAR_MAX;

Output:
127

Example 1

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

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

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

Output

CHAR_MAX: 127

Example 2

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

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

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

Output

CHAR_MAX: 127