Can U write a C-program to print the size of a data type
without using the sizeof() operator? Explain how it works
inside ?

Answer Posted / sanjay bhosale

// SizeOperator.cpp : main project file.
// Program : To implement sizeof operator

#include "stdafx.h"
#include<stdio.h>
#define sizeof_op1(val) ((char *)(&(val) + 1) - (char *)&(val))// for variable
#define sizeof_op2(type) ((type *)0) + 1//((type *) (10) + 1) - (type *) (10) // for type

using namespace System;

int main(array<System::String ^> ^args)
{
int i=0;
char ch = 'a';
float f = 1.00f;

printf("\nSize of int : %d %d",sizeof_op2(int),sizeof(int));
printf("\nSize of char : %d %d",sizeof_op2(char),sizeof(char));
printf("\nSize of float : %d %d",sizeof_op2(float),sizeof(float));
printf("\nSize of long : %d %d",sizeof_op2(long),sizeof(long));
printf("\nSize of short : %d %d",sizeof_op2(short),sizeof(short));
printf("\nSize of double : %d %d",sizeof_op2(double),sizeof(double));
printf("\nSize of long double : %d %d",sizeof_op2(long double),sizeof(long double));

printf("\nsize of int variable :%d %d",sizeof_op1(i),sizeof(i));
printf("\nsize of char variable :%d %d",sizeof_op1(ch),sizeof(ch));
printf("\nsize of float variable :%d %d",sizeof_op1(f),sizeof(f));
//Console::WriteLine(L"Hello World");
getchar();
return 0;
}

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to write c functions that modify head pointer of a linked list?

60


Can I initialize unions?

92


What does 2n 4c mean?

73


Badboy is defined who has ALL the following properties: Does not have a girlfriend and is not married. He is not more than 23 years old. The middle name should be "Singh" The last name should have more than 4 characters. The character 'a' should appear in the last name at least two times. The name of one of his brothers should be "Ram" Write a method: boolean isBadBoy(boolean hasGirlFriend , boolean isMarried, int age , String middleName , String lastName , String[] brotherName); isHaveGirlFriend is true if the person has a girlfriend isMarried is true if the person is married age is the age of the person middleName is the middle name of the person lastName is the last name of the person brotherName is the array of the names of his brothers

891


What is a void * in c?

52






Is it cc or c in a letter?

63


Why is it important to memset a variable, immediately after allocating memory to it ?

1061


What are valid signatures for the Main function?

135


What is the translation phases used in c language?

94


Explain what header files do I need in order to define the standard library functions I use?

100


What is dynamic variable in c?

44


What is a static variable in c?

39


to print the salary of an employee according to follwing calculation: Allowances:HRA-20% of BASIC,DA-45% of BASIC,TA-10%. Deductions:EPF-8% of BASIC,LIC-Rs.200/-Prof.Tax:Rs.200/- create c language program?

967


How can I read in an object file and jump to locations in it?

81


The % symbol has a special use in a printf statement. Explain how would you place this character as part of the output on the screen?

96