exam8-23.cpp

来自「很好的C程序设计教程」· C++ 代码 · 共 33 行

/*文件名:exam8_23.cpp*/
#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)
{
	return(a/b);
}
int compute(int (*func)(int,int),int x,int y)
{
	int result;
	result=func(x,y); 	/*或result=(*func)(x,y);*/
	return(result);
}
main()
{
	int x=10,y=5;
	printf("%d+%d=%d\n",x,y,compute(add,x,y));
	printf("%d-%d=%d\n",x,y,compute(sub,x,y));
	printf("%d*%d=%d\n",x,y,compute(mul,x,y));
	printf("%d/%d=%d\n",x,y,compute(div,x,y));
}