C语言赋值函数指针
示例
#include <stdio.h>
/* increment: take number, increment it by one, and return it */
int increment(int i)
{
printf("increment %d by 1\n", i);
return i + 1;
}
/* decrement: take number, decrement it by one, and return it */
int decrement(int i)
{
printf("decrement %d by 1\n", i);
return i - 1;
}
int main(void)
{
int num = 0; /* declare number to increment */
int (*fp)(int); /* declare a function pointer */
fp = &increment; /* set function pointer to increment function */
num = (*fp)(num); /* increment num */
num = (*fp)(num); /* increment num a second time */
fp = &decrement; /* set function pointer to decrement function */
num = (*fp)(num); /* decrement num */
printf("num is now: %d\n", num);
return 0;
}
热门推荐
10 财运虎年祝福语简短语
11 单亲爸爸春节祝福语简短
12 狗狗上厕所训练
13 植物种植祝福语简短
14 翻译考试祝福语朋友简短
15 个人周年庆简短祝福语
16 狗狗怎么训练
17 分别祝福语简短搞笑英文
18 生日广州男生祝福语简短