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Write a C program to reverse the string without using strrev() function?
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Rohan- Member Since Nov-2005 | Feb 18th, 2006
#include <stdio.h>
#include <conio.h>
#include <string.h>void main()
{
char *str;
int i,len;//not using any temp variable and assume we can use only string array and length
printf("Enter String : ");
scanf("%s",str);
len=strlen(str)-1;
for(i=0;i<strlen(str)/2;i++)
{
str[i]+=str[len];
str[len]=str[i]-str[len];
str[i]=str[i]-str[len--];
}
printf("Reverse String is : %s",str);
getch();
}naveen
- Jun 17th, 2017
Code- #include<stdio.h>
- #include<conio.h>
- #include<string.h>
- "enter string: ");
- scanf("%s""reverse string : %s" ,str);
- getch();
- }
Gurjyot Singh
- Dec 5th, 2016
Here`s the answer
Code- #include<stdio.h>
- #include<conio.h>
- #include<string.h>
- "Enter String :
- ""%c"
Can we execute any simple program without installing any Operating system?
I think no,can u suggest?
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Answered by: kunal kaushal
- Jul 24th, 2006
No! we can not run any simple program with out using any interface such as operatin systen or System software. but in some cases like Machine level languge or firmware run without any software because it directlly communicate with hardware and makes the hardware active so other program can run using his platform.
Siba Ranjan Biswal
- Feb 11th, 2014
Yes a program can be executed with out operating system..for example the boot executable program runs in systems while no operating system is available prior to it.
kaaka
- Feb 9th, 2008
Havent u guys heard of Assembly Language??? A microprocessor kit?? They dont have OS... But still we execute programs......
Write an O(log2(N)) algorithm to find X^N
ashgoel
- Jun 24th, 2010
represent N=b(k)b(k-1)....b(1)b(0) as bit representationthen N=summation i=o to k b(i)*2^iso x can be represented as x(N)=x(b0)*x(2b1)*x(4b2)...*x(2(k)bk)bois nothing but Nmod 2long power(...
rahuldbhagat
- May 3rd, 2008
Here is the algorithm that works well and takes O(log n) time.Algorithm Exponientiate(x,n)//computes x^n for an integer n>=0{ m:= n; power:=1; ...
What is actually meant for BUFFER? how does it work
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Answered by: Ankur
- Jul 14th, 2007
Buffer is something that is used to hold the data temporarly.
Ex-
If we are watching any thing online,then buffering of data takes place i.e for sometime data get stored in buffer then processed.sathiyapriya
- Feb 8th, 2015
It is like a storage area
Avinash kumar
- Jan 23rd, 2015
A buffer is a memory space that is used to hold different data items temporarily. its used for communication of different processes.I.e. Interprocess communication. The most relevant example is , play...
return 0;
}
You notice that I use 3[a] instead of a[3], however, this code works fine but I don't know how.
It will be grateful if someone explians to me why and how this code works fine.
Thanks.">Take this example:#include int main (){ int a [5]; a [3] = 1111; printf ("3[a] = %dn", 3[a]); return 0;}You notice that I use 3[a] instead of a[3], however, this code works fine but I don't know how.It will be grateful if someone explians to me why and how this code works fine.Thanks.
winny gupta
- Feb 15th, 2007
the above code works fine. This is so because when the program runs, an array is internally converted to a pointer notation,i.e., *(a + 3) for a[3]. The same notation,i.e. *(a+3) is achieved for 3...
mytest1
- Jan 30th, 2007
whenever u declare a array, the name of the array( i.e the array variable) is actually a pointer to the starting address of the memory area that was reserved for the array..for ex:int arr[10];here "ar...
What is the main difference between portability and Platform independent ?
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Lecks- Member Since Feb-2010 | Feb 22nd, 2010
I agree it is correct to say that Java is platform independent, but it is due to the Java Virtual Machine. Java programs are only intermediately compiled, which allows adaptation to the given environment it needs to run in later.
An example of a portability issue is the creation of Unix. The first version was not portable. It was specific only to that computer's architecture. Unix became portable when it was rewritten in C. The new version written in C was portable because C served as a "translator", if you will, between what underlying architecture or devices were physically in the computer and what unix wanted them to do.Lecks
- Feb 22nd, 2010
I agree it is correct to say that Java is platform independent, but it is due to the Java Virtual Machine. Java programs are only intermediately compiled, which allows adaptation to the give...
akki21
- Feb 21st, 2007
"portability" refers to the ability of a system to support a particular software.it depends on the system configurations."platform independent"JAVA is a platform independent software. it need not be installed for the processing of its program
Basic elements of a picture in volume graphics
The basic elements of a picture in volume graphics is 1. pixel 2. volsel 3. voxel 4. either pixel or voxel
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Sandhya.Kishan- Member Since Mar-2012 | Jul 4th, 2012
The basic elements of a picture in volume graphics is voxel.
upasi
- Apr 26th, 2018
1. pixel
mahata
- Feb 13th, 2016
3. Voxel
What is the OSI Model?
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Answered by: Gurvinder Singh
- Dec 28th, 2006
OSI is Open System Interface Model. It is a concept which is used to make data transfer in steps. There are 7 layers and each layer interact with its counterpart. earlier a product made by any abc co was able to communicate with the same company product. to communicate with different co's products it was created. as it's name shows "OPEN System Interface"
SachinK
- Feb 8th, 2007
I think its Open System Interconection Model
Gurvinder Singh
- Dec 28th, 2006
OSI is Open System Interface Model. It is a concept which is used to make data transfer in steps. There are 7 layers and each layer interact with its counterpart. earlier a product made by any abc co ...
How do you remove a column from table
shravanam
- Oct 25th, 2007
You can remove a column but first of all you should see that column doest have any values and it should not be a primary keyALTER TABLE DROP COLUMN
Mohammed Abdul Afroze
- Sep 27th, 2007
To drop a Column from a Table.The command is.Sql>Alter table drop column .
How can we print "hello world" in c without using semicolon/
ankush sharma
- Oct 16th, 2007
We can print message by using ternary operator or write the code in if statement
What are mutants and explain mutation testing?
mfsi_chinmayb
- Dec 13th, 2011
Mutation testing is like testing the tester... Under Mutation testing technique we need to check the working of the test suite. Basically we introduce some kind of change in the program source code i...
vijay_321
- Feb 9th, 2006
Mutation testing is an one in which we first assume a certain fact and also a mutated fact which opposes the fact is also defined.Our testing succeed only if the mutated fact fails.
What is virtual Memory under Linux?
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Answered by: Hitesh
- Jan 3rd, 2007
Linux supports virtual memory, that is, using a disk as an extension of RAM so that the effective size of usable memory grows correspondingly. The kernel will write the contents of a currently unused block of memory to the hard disk so that the memory can be used for another purpose. When the original contents are needed again, they are read back into memory. This is all made completely transparent to the user; programs running under Linux only see the larger amount of memory available and don't notice that parts of them reside on the disk from time to time. Of course, reading and writing the hard disk is slower (on the order of a thousand times slower) than using real memory, so the programs don't run as fast. The part of the hard disk that is used as virtual memory is called the swap space
maureenash
- Aug 17th, 2016
Virtual Memory Usage from Java under Linux, too much memory used. It is using a disk as an extension of RAM so that the effective size of usable memory grows correspondingly. The kernel will write th...
Hitesh
- Jan 3rd, 2007
Linux supports virtual memory, that is, using a disk as an extension of RAM so that the effective size of usable memory grows correspondingly. The kernel will write the contents of a currently unused ...
How can we check out the files from cvs?
madhur_agarwal
- Jan 11th, 2007
Put an exclusive lock on the file while checking out and say "commit selection" while checking in the file.
shranu
- May 15th, 2006
Go to the file which you have to check out.Right click and goto "Update" and update the file.Right click on the same file and goto explore.You will find all the files in that particular folder.Now you can copy/paste the required files anywhere in your machine.
Stack pointer
Can anyone give me complete information while performing this situation,A function is running, it has its own stack pointer, memory area now it invokes another function from this point what changes will be in it's memory area and what other changes in data segment, stack segment, heap segment. I want a complete picture of memory architecture?
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kalayama- Member Since Sep-2006 | Dec 8th, 2006
There will be a lot of changes in fact. First of all, all the variables the function was suing needs to be pushed into the stack. (we need all these variables when we return from the other function). The Program counter will be pushed to stack too... (When the "return" of second function occurs we should know where to 'return' to)These are the basics which are bound to happen when a function calls another.
kalayama
- Dec 8th, 2006
There will be a lot of changes in fact. First of all, all the variables the function was suing needs to be pushed into the stack. (we need all these variables when we return from the other function). ...
prasanth
- Nov 27th, 2006
hi, There will be no change in memory area .And all the major part will be taken by the stack pointer.It depends on the calling conventions like pascals...
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