Usage of C++ function pointer-EEWORLD

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A function pointer is a pointer variable that points to a function. Therefore, a "function pointer" itself should first be a pointer variable, but the pointer variable points to a function. The following program shows us how to use it.

// 0302.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

int fun(int *pa,int *pb)
{
int out=(*pa)*(*pb);
return out;
}

int _tmain(int argc, _TCHAR* argv[])
{
int a=10,b=20;
int(*funn)(int*pa,int*pb);//The first step is to define the function pointer
funn=fun;//The second step, pointer = function name
int sum=funn(&a,&b);//The third step, the function pointer operation is pointed to the function
printf("%d ",sum);
return 0;
}

Keywords：C++ Reference address：Usage of C++ function pointer

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Recommended ReadingLatest update time:2024-11-16 14:41

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