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(limits.h) in C/C++
The header files “limits.h” exists in C language while <climits> in C++ language. Several macros are defined in these header files. The limits specify that variable cannot store values beyond the limits.
Some macros in “limits.h” or <climits> header file are as follows
| CHAR_BIT | LONG_MIN | LONG_MAX | CHAR_MIN | CHAR_MAX |
| INT_MIN | INT_MAX | SHRT_MIN | SHRT_MAX | ULONG_MAX |
Here is an example of <climits> in C++ language,
Example
#include<iostream>
#include <bits/stdc++.h>
#include<climits>
using namespace std;
int main() {
int x = 28;
int a = CHAR_BIT*sizeof(x);
stack<bool> s;
cout << "The number is : " << x << endl;
for (int i=1; i<=a; i++) {
s.push(x%2);
x = x/2;
}
cout << "The number of bits in a byte : " << CHAR_BIT << endl;
for (int i=1; i<=a; i++) {
cout << s.top();
s.pop();
if (i % CHAR_BIT == 0)
cout << " ";
}
cout << "\n\nThe minimum value of short int :" << SHRT_MIN;
return 0;
}Output
The number is : 28 The number of bits in a byte : 8 00000000 00000000 00000000 00011100 The minimum value of short int :-32768
In the above program, two macros of <climits> are represented. One is CHAR_BIT and another is SHRT_MIN. CHAR_BIT defines the number of bits in char and SHRT_MIN defines the minimum value for short int.
int x = 28; int a = CHAR_BIT*sizeof(x); …. cout << "\n\nThe minimum value of short int :" << SHRT_MIN;
Updated on: 26-Jun-2020
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