?? 2-32.c
字號:
#include"stdio.h"
int add(int a,int b)
{
return (a+b);
}
int sub(int a,int b)
{
return (a-b);
}
int mul(int a,int b)
{
return a*b;
}
int div(int a,int b)
{
if(b==0)
{
printf("Divide 0 Error!\n");
return -1;
}
return a/b;
}
void GetOper(int select,int a,int b,int (*p)())
{
switch(select)
{
case 1: p=add;
break;
case 2: p=sub;
break;
case 3: p=mul;
break;
case 4: p=div;
break;
default: printf("Error Selection\n");
return;
}
printf("The result is %d\n",(*p)(a,b));
}
main()
{
int select,a,b;
int (*p)();
clrscr();
printf("Please input two integer number:\n");
scanf("%d%d",&a,&b);
printf("Please select an operation:\n");
printf(" 1.Add 2.Sub 3.Multipl 4.Divide\n");
scanf("%d",&select);
GetOper(select,a,b,p);
getch();
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -