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| #include <stdio.h>
#define IS_EMPTY (ptr) (!(ptr))
#define IS_FULL (ptr) (!(ptr))
//IS_EMPTY 判断传入链表是否为空
//IS_FULL 看malloc的temp地址区域是否为空,空则说明内存满
#define SWAP(x,y,t) ((t) = (x),(x)=(y),(y)=(t))
void swap(int *x,int *y){
int temp;
temp = *x;
*x = *y;
*y = temp;
}
#define COMPARE(x,y) ( ((x) < (y)) ? -1 : ((x) == (y)) ? 0 : 1)
int compare(int x,int y){
if (x < y) return -1;
else if (x == y) return 0;
else return 1;
}
int main (int argc, const char * argv[])
{
int a,b;
a= 5;
b= 10;
printf("%d %d \n",compare(a, b),COMPARE(a,b));
a= 10;
b= 10;
printf("%d %d \n",compare(a, b),COMPARE(a,b));
a= 50;
b= 10;
printf("%d %d \n",compare(a, b),COMPARE(a,b));
printf("%d %d \n",a,b);
swap(&a,&b);
printf("%d %d \n",a,b);
int temp;
SWAP(a, b, temp);
printf("%d %d \n",a,b);
return 0;
}
|