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The two declarations are different Can you explain where these declarations are applicable effectivelyconst char *s; char const *s;
ardashev
- Nov 17th, 2007
#include <stdlib.h>int main(){ const char *pr1 = malloc(4); char const *pr2 = malloc(4); char * const pr3 = malloc(4); &nbs...
manik sheeri
- Nov 7th, 2006
i think that the both declarations are the sameconst char *s;char const *s;in both cases the string to which s will point cant be changed.but something likechar * const s;means that the pointer is he...
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What is a macro, and how do you use it?
A macro is a preprocessor directive that provides a mechanism for token replacement in your source code. Macros are created by using the #define statement. Here is an example of a macro: Macros can also utilize special operators such as the stringizing operator (#) and the concatenation operator (##).The stringizing operator can be used to convert macro parameters to quoted strings, as in the...
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Can static variables be declared in a header file?
You can’t declare a static variable without defining it as well (this is because the storage class modifiers static and extern are mutually exclusive). A static variable can be defined in a header file, but this would cause each source file that included the header file to have its own private copy of the variable, which is probably not what was intended.
sssss
- Nov 11th, 2007
In CThe scope of static variable is file. ie., if declared the variable is accessible accross the file.When declared the vairable in a header then its exposed to where ever its included. Every f...
vg_220
- Aug 14th, 2007
We are talking C. Isn't it? C doesn't have class construct so please think the 'C' way ! According me, static declaration in a header file should not generally be useful. Can anyone suggest a good use of it?
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Pascal Triangle
What is the C program for Pascal Triangle 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 5 1
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What is the meaning memory allocation & why we use it?
yagnam ramesh babu
- Nov 5th, 2007
allocation of memory for a particular variable like is done because to save unusage of memory
Gautam Bhalla
- Jul 20th, 2007
Memory Allocation:--Memory allocation is nothing but allocation of a block of memory or storage register from RAM to keep track of previous instractions or variables we are dealing with.Need:-Memory allocarion is important to keep the track of current value of the data items and instructions.
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Is nesting of conditional operator( ? : ) possible? If no then why? If yes then write down the program to find the greatest of three number?
Yes, Nesting of conditional operator is possible .Write down the program yourself.
baseersd
- Oct 31st, 2007
Conditional operator can be nested. But it is not recommended as there are chances of getting confuse with its statements. Here is the code for nesting of conditional operator.#include <stdio.h>...
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What is the procedure in memory after running the c program ?
I mean generally after execution of c program .c,.doc,.exe,.bak files are created,so how these files are allocated in the memory stack?
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What is the difference between declaring a structure in C like : 1) typedef struct and2) struct
sarathi trichy
- Oct 25th, 2007
Typedef struct means : it tells the allies name of structEX:typedef struct{int data,y;float s;}sa;sa s1,s2;struct: struct is a keyword for define a multlple type variable
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How to display the given number in reverse order.Data type cannot be character array.
sarathi trichy
- Oct 25th, 2007
#include<stdio.h>#include<conio.h>void main(){int x,y,z;clrscr();printf("enter the number");scanf("%d",&x);while(x>0){y=x%10;printf("%d",y);x=x/10;}getch();}
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Main(){ char * strA; char * strB = I am OK; memcpy( strA, strB, 6);}
A) Compile errorB) I am OKC) Runtime error.D) I am OExplanation: I am OK is not within " "
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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}
change(int *b,int n)
{
int i;
for(i=0;i
}
sytaxis correct?? was asked i a test
">Output of this Programme please??main(){ int a[]={2,4,6,8,10}; int i;change(a,5);for(int i=0;i
chaitanya
- Oct 22nd, 2007
First lets get the code ryt..#include "stdio.h"void change(int *b,int n){? int i;? for(i=0;i
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How to write a sizeof function using a macro function?
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What is the difference between a string copy (strcpy) and a memory copy (memcpy)? When should each be used?
The strcpy() function is designed to work exclusively with strings. It copies each byte of the source string to the destination string and stops when the terminating null character () has been moved. On the other hand, the memcpy() function is designed to work with any type of data. Because not all data ends with a null character, you must provide the memcpy() function with the number of bytes you...
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