Answer / inderchauhan

A pointer is a special kind of variable in C and C++ that
holds the address of another variable.


my first pointer
#include <iostream>
using namespace std;

int main ()
{
int firstvalue, secondvalue;
int * mypointer;

mypointer = &firstvalue;
*mypointer = 10;
mypointer = &secondvalue;
*mypointer = 20;
cout << "firstvalue is " << firstvalue << endl;
cout << "secondvalue is " << secondvalue << endl;
return 0;
}



firstvalue is 10
secondvalue is 20

Answer / sanjay bhosale

function pointer is simply a pointer which holds the address of the function so we can call that function by using pointer.
It is helpful in situations where we are required to pass the function pointer as parameter to some previously defined functions.
for e.g.
in comparison method we may pass function pointer for function which will compare 2 items/objects and help to comparison method.

Answer / mahi

pointer is a variable witch can strore address of another
variable

i have a written test in tomorrow

1 Answers   NNN, Value Labs,

---

what is the purpose of the code, and is there any problem with the code? int f( int n, int l, int r ) { return (n << l) >> r; }

2 Answers   Google,

---

accept character from keyboard untill the user presses the enter key.If the user enters any character other than upper case(A-Z)alphabets program should stop taking any input

1 Answers  

---

Is the below things valid & where it will be stored in memory layout ? static const volatile int i; register struct { } ; static register;

2 Answers   Bosch,

---

GIven a sequence of characters. How will you convert the lower case characters to upper case characters. ( Try using bit vector - sol given in the C lib -> typec.h)

0 Answers  

---

how to make program without <> in libray.

0 Answers  

---

#include<stdio.h> int fun(); int i; int main() { while(i) { fun(); main(); } printf("hello \n"); return 0; } int fun() { printf("hi"); } answer is hello.how??wat is tat while(i) mean?

7 Answers   Intel,

---

Why we use conio h in c?

0 Answers  

---

Explain what is the difference between null and nul?

0 Answers  

---

why you will give me a job in TCS.

7 Answers   TCS,

---

we have to use realloc only after malloc or calloc ? or we can use initially with out depending on whether we are using malloc or calloc in our program ?

2 Answers  

---

Meaning of () in c

1 Answers  

---