Which one will execute faster if(flag==0) or if (0==flag) and why?

ridercoder

 Profile Answers by ridercoder Questions by ridercoder

• Dec 25th, 2010

It all depends on what assembly code the compiler generates. Essentially, do "0 == flag" and "flag == 0" compile down to the same code, or not?

jbode

 Profile Answers by jbode Questions by jbode

• Nov 19th, 2010

Both gcc and Visual Studio generated the exact same machine code for both forms (as well as for !flag), so neither version would be faster than the other for platforms using those compilers.? Frankly, I'd be surprised if any compiler generated different code for the two forms.?

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How do you declare an array of N pointers to functions returning pointers to functions returning pointers to characters?

jbode

 Profile Answers by jbode Questions by jbode

• Jan 10th, 2011

Non-typedef'd version:char *(*(*funcArray[N])())();Which is read as follows:funcArray -- funcArray funcArray[N] -- is an N-element array ...

Jayakrishnan Chathu

 Profile Answers by Jayakrishnan Chathu Questions by Jayakrishnan Chathu

• Jan 9th, 2011

Define a function pointer that returns a pointer to chartypedef char * (cfuncptr*) ();Define a function pointer that returns a function pointer, which returns a pointer to char.typedef  cfuncptr ...

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How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?

jbode

 Profile Answers by jbode Questions by jbode

• Aug 20th, 2011

Arr is an N-element array of pointers to functions returning pointers to functions returning pointers to char.

Code
char *(*(*arr[N])())()

Sooraj Kumar

 Profile Answers by Sooraj Kumar Questions by Sooraj Kumar

• Aug 3rd, 2011

Data_type *pointer_name[size];

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and to display " Hello %s!! Do you want to try again [Y/N]? "

jyothisudi

 Profile Answers by jyothisudi Questions by jyothisudi

• Aug 6th, 2011

Here is the code

Code
#include<stdio.h>
#include<conio.h>
void main()
{
int i,n;
char name[100],ch;
do
{
printf("enter your name");
scanf("%s",&name);
printf("enter the number of times you want to repeat the loop");
scanf("%d",&n);
for(i=0;i<n;i++)
printf("%s",name);
printf("Hello %s!!! do you want to try again Y/N",name);
getchar(ch);
}
while(ch=='Y')
}

Rajath

 Profile Answers by Rajath Questions by Rajath

• Aug 5th, 2011

Read the name from the user and until his choice becomes 0 keep printing his input name through the while loop "c #include #include int main() { int i,n; char name[100]; ...

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What is the difference between cprintf and printf? Please explain in detail.

indinfer

 Profile Answers by indinfer Questions by indinfer

• Nov 16th, 2014

I think the original question was not a typo. The original question was printf, not fprintf, compared to cprintf. And I think printf output goes to stdout (standard out) which by default goes to con (the console). cprintf output goes only to con.

Howard Lee Harkness

• Apr 4th, 2013

Cprintf outputs to the console device.
fprintf outputs to a stream specified by the 1st parameter.

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c#include
#include
int main()
{
int a=1,r=2,i;
for (i=0;i

nira

• Jul 1st, 2014

Much easier approach, this is a logic question, not programming

Code
    
    #include<stdio.h>
    #include<math.h>
    int main()
    {
    int a=1,r=2,i;
    for (i=0;i<=10;i++)
    printf(",%d ", a * pow(r,i) + i);
    return 0;
    }

shweta gupta

 Profile Answers by shweta gupta Questions by shweta gupta

• Jun 25th, 2014

Code
#include<iostream>
using namespace std;
int main()
{
int temp=3;
for(int i=0;i<10;i++){
        cout<<temp<<endl;
        temp=temp*2-i;
 
 
}
  
    return 0;
}

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c #i ain()
{
float p=1,q=2,r=-2,a;
a=avg(p,(q=4,r=-12,q),r);
printf("%f",a); return 0;
}
float avg(float x,float y,float z)
{
return (x+y+z)/3;
}
a) 1.000000
b) 0.333333
c) -2.333333
d) 1

Howard Lee Harkness

• Apr 4th, 2013

The real answer is that any programmer who would write this kind of code should be given the opportunity to work for the competition.

The sequence expression (q=4,r=-12,q) evaluates to 4 (the last element), with the side-effect of assigning r the value -12. So, avg(1,4,-12) = -7/3 = -2.33...

bavya

• Feb 15th, 2013

Avg(1,-6,-2)/3 =-2.3333

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C Program to print all prime numbers btw 1 to 100..pls explain the program: What is if(p)??cpp#include
#include
int main()
{
int num,n,div,p;
printf("Enter any number: ");
scanf("%d", &num);
for(n=2; n

jbode

 Profile Answers by jbode Questions by jbode

• Mar 8th, 2017

To answer the specific question, "if(p)" is the same thing as "if (p == 1)" or "if (p != 0)". The variable "p" is being used as a flag to indicate whether the current candidate number ("n") is prime ...

Rajkumar Yonzan

• Feb 24th, 2017

// Wap to display all prime number from 1 to 100. //

#include
#include
void main()
{
int i,j,n;
for(n=1;n

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j=scanf("%d",&i);
printf("%d",j);

jbode

 Profile Answers by jbode Questions by jbode

• Feb 2nd, 2017

`scanf` returns the number of successful conversions and assignments, or EOF if it hits the end of the input stream before any characters had been read. In this particular case, it will return 1 on s...

nitin

• Jan 30th, 2017

1, the scanf success return 1 fail return 0.

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Using the #define method of declaring a constant enables you to declare a constant in one place and use it throughout your program. This helps make your programs more maintainable, because you need to maintain only the #define statement and not several instances of individual constants throughout your program.  For instance, if your program used the value of pi (approximately 3.14159) several...

kbjarnason

 Profile Answers by kbjarnason Questions by kbjarnason

• Jul 2nd, 2010

I see examples such as #define PI 3.1415, which show _how_ you can use a define to declare a constant, but don't exactly explain _why_ you'd want to do this, rather than, say, const double PI ...

janhavibend

 Profile Answers by janhavibend Questions by janhavibend

• Jul 24th, 2008

When you define constant variable there is possiblity that it's value may get changed in the program accidently by use of say pointer, but if you define constant by #define it's value can't be changed. This is also one of the benifit of using #define.

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The standard C library provides several functions for converting numbers of all formats (integers, longs, floats, and so on) to strings and vice versa  The following functions can be used to convert integers to strings: Function Name Purpose itoa() Converts an integer value to a string. ltoa() Converts a long integer value to a string. ultoa() Converts an unsigned long integer value to a string....

kbjarnason

 Profile Answers by kbjarnason Questions by kbjarnason

• Jul 1st, 2010

Note that while itoa, ltoa and the like may be provided, these are not standard functions.  itoa is, but is both unreliable and used for a different purpose.There is no trivial "one size fit...

dasam

 Profile Answers by dasam Questions by dasam

• Mar 29th, 2007

Sprintf() is used to convert integer to string.

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      expression if (a=0) always return false      expression if (a=1) always return true

Vikramojha

 Profile Answers by Vikramojha Questions by Vikramojha

• Jan 31st, 2010

Here the question exactly means the statement which will always irrespective of any condition and the statement which will never execute, so here if we useif (1) it will always execute or will return true andthe statement if (0) will never execute or will always return false.

nsivaramprasad

 Profile Answers by nsivaramprasad Questions by nsivaramprasad

• Nov 28th, 2005

Irrespective of the value of a variable a, a^a always return FALSE (0)!(a^a) always return TRUE (1)

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C

pal

• Jul 20th, 2007

the ans  8,9n1[2] = (*(n+2))

vasuma

• Feb 14th, 2007

First of all code is having synatax errors.no is undeclared.output is 8, some junk value so, option d is correct.I have compiled and saw the result.

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rohit dwivedi9450

 Profile Answers by rohit dwivedi9450 Questions by rohit dwivedi9450

• Aug 22nd, 2007

Scope of x=6 will take precedenc on x=7so y=7

Chithambaram.P

 Profile Answers by Chithambaram.P Questions by Chithambaram.P

• Jan 11th, 2007

Answer is y=7 Becoz here we r assigning the value to x=6,not checking condition,we will see the operator meaning carefully

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molakalapalli murali kris

 Profile Answers by molakalapalli murali kris Questions by molakalapalli murali kris

• Mar 19th, 2008

Ya answer is FREE() bczmalloc() is used to allocate single block of memorycalloc()  is used to allocate multible blocks of memoryrealloc() is used to reallocate the allocated memorybut free()is used to deallocate the memory

Nishi Rathore

• Sep 25th, 2007

Free() is odd because rest functions are used to allocate memory and free is used to deallocate the memory

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chandradeepika

 Profile Answers by chandradeepika Questions by chandradeepika

• Jun 13th, 2008

Ans:C)%x

achintiips

 Profile Answers by achintiips Questions by achintiips

• May 20th, 2008

C - its %x

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manoj

• Nov 11th, 2006

The answer is 10 .please dont put wrong answers and guess so that others may not be misguided.

Krupa

• May 25th, 2006

Option b is the answer

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kbjarnason

 Profile Answers by kbjarnason Questions by kbjarnason

• Jul 2nd, 2010

The basic problem is that it blows away your encapsulation.  Friend functions see right through "protected" and "private" and can see blinkin' everything.Or, in other words, "your friends get to play with your private parts."  :)

muthu kumar k

• Mar 27th, 2006

check this FAQ listhttp://www.parashift.com/c++-faq-lite/friends.html#faq-14.3

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A) Gets into Infinite loopB) Compile error. Illegal syntaxC) None of the aboveD) Runtime error.Explanation: illegal syntax for using return

Kajal

• Oct 5th, 2021

None of the above

vishal

• Mar 27th, 2006

agree with above...return is not an expressionB) Compile error. Illegal syntax

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A) Compile errorB) I am OKC) Runtime error.D) I am OExplanation: I am OK is not within " "

mani2881

 Profile Answers by mani2881 Questions by mani2881

• Oct 22nd, 2007

the memcpy function will copy n bytes from the object pointed by strB into strA. If the copying takes places between objects that overlap, the behaviour will be undefined. If these to char pointer is assigned an address which don't overflow, this would work.Thanks,mani

vikas

• Apr 28th, 2006

Its the Runtime error as strA hasnt been allocated any memory

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