&&与||的妙用

据说是EMC的笔试题

写一个函数int func(int i, int N){(1);}，输出

i

i+1

...

N

N-1

...

i

要求用一个语句完成，不能用for,while等等。

 

#include <stdio.h>/* *give a function interface int func(int i, int N) where i <= N, *print i, i+1, ..., N, N, N-1, ..., i. *can just use one statement, and can not use statements such as *if, for, do, while, ? : */int func(int i, int N){return !((i < N) && printf("%d/n", i) && func(i + 1, N)|| printf("%d/n", i));}int func2(int i, int N){return (i == N) && printf("%d/n", i) || printf("%d/n", i) && func2(i + 1, N) && printf("%d/n", i);} int main(){func(1, 5);printf("*************/n");func2(1, 5);printf("*************/n");return 0;}