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

Answers were Sorted based on User's Feedback



Can U write a C-program to print the size of a data type without using the sizeof() operator? Expla..

Answer / rajesh

#include<stdio.h>
int main()
{
int p;

printf("%d\n",(char*)(&p+1)-(char*)(&p));
return 0;
}

Is This Answer Correct ?    8 Yes 3 No

Can U write a C-program to print the size of a data type without using the sizeof() operator? Expla..

Answer / 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

Can U write a C-program to print the size of a data type without using the sizeof() operator? Expla..

Answer / saikat

#include <stdio.h>

int main()
{
float a[2];

int size = (char*)&a[1] - (char*)&a[0];

printf("%d
",size);
return 0;
}

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More C Interview Questions

how to swap four numbers without using fifth variable?

2 Answers  


Write a program of prime number using recursion.

0 Answers   Aspiring Minds,


#include<stdio.h> int SumElement(int *,int); void main(void) { int x[10]; int i=10; for(;i;) { i--; *(x+i)=i; } printf("%d",SumElement(x,10)); } int SumElement(int array[],int size) { int i=0; float sum=0; for(;i<size;i++) sum+=array[i]; return sum; } output?

5 Answers   Ramco,


if p is a string contained in a string?

0 Answers  


which type of aspect you want from the student.

0 Answers   IBM, TCS,






What is a protocol in c?

0 Answers  


Why static variable is used in c?

0 Answers  


pointer_variable=(typecasting datatype*)malloc(sizeof(datatype)); This is the syntax for malloc?Please explain this,how it work with an example?

2 Answers   eClerx, Excel, kenexa,


Why is c faster?

0 Answers  


What is the basic structure of c?

0 Answers  


while initialization of two dimensional arrays we can initialize like a[][2] but why not a[2][] is there any reason behind this?

4 Answers   Aptech,


Explain do array subscripts always start with zero?

0 Answers  


Categories