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What is Function Pointer? Explain with example?
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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
| Is This Answer Correct ? | 1 Yes | 1 No |
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.
| Is This Answer Correct ? | 0 Yes | 0 No |
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number 2 plssssss help !!....using array.. turbo c.. create a program that will accept a number and determine if it is a happy number or an unhappy number.. example: enter a number : 7 7*7=49 then 4 and 9 4*4 and 9*9== 16 + 18 gives you 97 then 9 and 7 9*9 and 7*7 == 81 + 49 gives you 130 then 1 and 3 1*1 and 3*3 == 1 + 9 gives you 10 1*1 gives you 1 sample output: 7= 49= 16+81= 97= 81+49=130 =1+9=10 =1 "7 is a happy number" . if the last number is 2 then the number being inputed is not a happy number.
C 
