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Pointer Disadvantages
What are the disadvantages of using pointer in C?
Satarupa Panda
- Nov 17th, 2011
If sufficient memory is not available during runtime for the storage of pointers, the program may crash.
jbode
- Feb 2nd, 2011
In general, there's no good way to know if a non-NULL pointer value is valid and refers to an area of memory that's safe to access and/or modify.There's no way to determine from the pointe...
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Count Negative Elements
A list of number is given. Make a program which counts the no of negative elements using array inc.
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Faster Statement Execute
Which one will execute faster if(flag==0) or if (0==flag) and why?
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
- 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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Declare Array of N Pointers
How do you declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
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
- 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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Declare an array of N pointers
How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
jbode
- Aug 20th, 2011
Arr is an N-element array of pointers to functions returning pointers to functions returning pointers to char.
Code -
How do you loop a program to display your name however times you want it to.
and to display " Hello %s!! Do you want to try again [Y/N]? "
jyothisudi
- Aug 6th, 2011
Here is the code
Code- #include<stdio.h>
- #include<conio.h>
- "enter your name");
- scanf("%s""enter the number of times you want to repeat the loop");
- scanf("%d""%s""Hello %s!!! do you want to try again Y/N"'Y')
- }
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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Difference between printf and cprintf
What is the difference between cprintf and printf? Please explain in detail.
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. -
What change is required in the following program so that its output becomes 3,6,11,20,37,......1034?
c#include
#include
int main()
{
int a=1,r=2,i;
for (i=0;inira
- Jul 1st, 2014
Much easier approach, this is a logic question, not programming
Code- #include<stdio.h>
- #include<math.h>
- ",%d "
What will be output if you will execute following c code?
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) 1Program to print all prime numbers btw 1 to 100
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; njbode
- 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;nOutput for following and explanation
j=scanf("%d",&i);
printf("%d",j);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.
What is the benefit of using const for declaring constants?
The benefit of using the const keyword is that the compiler might be able to make optimizations based on the knowledge that the value of the variable will not change. In addition, the compiler will try to ensure that the values won’t be changed inadvertently. Of course, the same benefits apply to #defined constants. The reason to use const rather than #define to define a constant is that a const variable...
hurdjg
- May 30th, 2007
A side effect benefit:Say you want to pass an argument that you do not want modified, but you do not want to pass by value.Solution pass as constant reference or pointer constant...
hurdjg
- May 30th, 2007
A side effect benefit:Say you want to pass an argument that you do not want modified, but you do not want to pass by value.Solution pass as constant reference or pointer constant...
Are pointers integers?
No, pointers are not integers.A pointer is an address.It is merely a positive number and not an integer.
What is false about the following A compound statement is a.A set of simple statmentsb.Demarcated on either side by curly bracketsc.Can be used in place of simple statementd.A C function is not a compound statement.
C
priya
- Jun 20th, 2007
A compound statement is defined as:A set of statements enclosed in a set of braces is known as a block or a compound statement.
Which of the following about automatic variables within a function is correct ?a.its type must be declared before using the variableb.they are localc.they are not initialised to zerod.they are global.
C
harinisathiyamurthy
- Oct 1st, 2007
AUTOMATIC VARIABLES ARE ALWAYS DECLARED WITHIN A FUNCTION.. SO THEY A LOCAL...
piyush
- Sep 25th, 2007
The answer is option B.As automatic variables are local only to the scope in which it is declared.
Which of the following about the C comments is incorrect ?a.commentscan go over multiple linesb.comments can start any where in the linec.a line can contain comments with out any language statementsd.comments can occur within comments
C
Read the function conv() given belowconv(int t){int u;u=5/9 * (t-32);return(u0;}What a.15b.0c.16.1d.29
A
avula chiru
- Sep 30th, 2010
The output is zero because u is declared as a int type when we devide the 5 with 9 the result is 0 and multiply it with t-32, the total result is zero.There fore the option is b.
A.R
- May 13th, 2007
The ans would be 0. 5/9 returns 0 becos both 5 & 9 are integers.
Which of the following represents true statement either x is in the range of 10 and 50 or y is zeroA. x >= 10 && x <= 50 || y = = 0B. x<50C. y!=10 && x>=50D. None of these
M SALEEM
- Aug 10th, 2021
B
Code- x >= 10 && x <= 50 || y = = 0
- B. x<50
- C. y!=10 && x>=50D
Read the following code# define MAX 100# define MIN 100 .... ....if(x>MAX)x=1;else if(x<MIN)x=-1;x=50;if the initial value of x=200,what is the value after executing this code?A. 200B. 1C. -1D. 50
vasu0040
- Aug 31st, 2010
200>100 true first the answer is 1 but compiler jumps to x=50;
so the final value is 50
because the else part has no paranthasis{ }
Ans