Write C++ Program to Find Size of int, float, double and char in Your System

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Posted by admin January 4, 2023

This program includes the climits and cfloat header files, which define constants for the minimum and maximum values of int and float, respectively. It also includes the cmath header file, which defines constants for the minimum and maximum values of double.

The sizeof operator returns the size of a data type in bytes. The program uses it to print the size of int, float, double, and char in bytes. It also prints the minimum and maximum values of int, float, and double using the constants defined in the climits, cfloat, and cmath header files, respectively.

I hope this helps! Let me know if you have any questions.

#include <iostream>
#include <climits> // for INT_MAX and INT_MIN
#include <cfloat> // for FLT_MAX and FLT_MIN
#include <cmath> // for DBL_MAX and DBL_MIN

int main()
{
    std::cout << "Size of int: " << sizeof(int) << " bytes" << std::endl;
    std::cout << "Minimum value of int: " << INT_MIN << std::endl;
    std::cout << "Maximum value of int: " << INT_MAX << std::endl;

    std::cout << "Size of float: " << sizeof(float) << " bytes" << std::endl;
    std::cout << "Minimum value of float: " << FLT_MIN << std::endl;
    std::cout << "Maximum value of float: " << FLT_MAX << std::endl;

    std::cout << "Size of double: " << sizeof(double) << " bytes" << std::endl;
    std::cout << "Minimum value of double: " << DBL_MIN << std::endl;
    std::cout << "Maximum value of double: " << DBL_MAX << std::endl;

    std::cout << "Size of char: " << sizeof(char) << " bytes" << std::endl;

    return 0;
}