c语言函数指针数组（转移表模拟计算器功能）

#include<stdio.h>
#include<windows.h>
#pragma warning(disable:4996)
void menu()
{
    
    
	printf("*****************************\n");
	printf("***********计算器************\n");
	printf("*****1.加法*****2.减法*******\n");
	printf("*****3.乘法*****4.除法*******\n");
	printf("*****0.EXIT******************\n");
	printf("*****************************\n");
}
int MyAdd(int x,int y)
{
    
    
	int n = x + y;
	return n;
}
int MySub(int x, int y)
{
    
    
	int n = x - y;
	return n;
}
int MyMul(int x, int y)
{
    
    
	int n = x * y;
	return n;
}
int MyDiv(int x,int y)
{
    
    
	int n = x / y;
	return n;
}
int main()
{
    
    
	int select = 0;
	int(*fun[5])(int, int) = {
    
     NULL,MyAdd,MySub,MyMul,MyDiv };
	while (1)
	{
    
    
		menu();
		printf("please select->\n");
		scanf("%d", &select);
		if (select < 0 || select>4)
		{
    
    
			printf(" Error,please input again!\n");
			continue;
		}
		if (select == 0)
		{
    
    
			printf("已退出\n");
			break;
		}
		int x = 0;
		int y = 0;
		printf("please enter x:");
		scanf("%d", &x);
		printf("please enter y:");
		scanf("%d", &y);
		int num = fun[select](x, y);
		printf("result:%d\n", num);
	}
	system("pause");
	return 0;
}
//运行环境：vs2019

附图：