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
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 |
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 |
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 |
how to swap four numbers without using fifth variable?
Write a program of prime number using recursion.
#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?
if p is a string contained in a string?
which type of aspect you want from the student.
What is a protocol in c?
Why static variable is used in c?
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?
What is the basic structure of c?
while initialization of two dimensional arrays we can initialize like a[][2] but why not a[2][] is there any reason behind this?
Explain do array subscripts always start with zero?