8. 逻辑操作符

&&   逻辑与
||   逻辑或

逻辑与和或的特点：
&&左边为假，右边就不计算了
|| 左边为真，右边就不计算了

例：360笔试题

#include <stdio.h>
int main()
{
	int  i = 0, a = 0, b = 2, c = 3, d = 4;

	i = a++ && ++b && d++;
	//i = a++ || ++b || d++;
	printf("a=%d b=%d c=%d d=%d\n", a, b, c, d);//1,2,3,4

	return 0;
}

#include <stdio.h>
int main()
{
	int  i = 0, a = 0, b = 2, c = 3, d = 4;

	//i = a++ && ++b && d++;
	i = a++ || ++b || d++;
	printf("a=%d b=%d c=%d d=%d\n", a, b, c, d);

	return 0;
}

#include <stdio.h>
int main()
{
	int  i = 0, a = 1, b = 2, c = 3, d = 4;

	i = a++ && ++b && d++;
	//i = a++ || ++b || d++;
	printf("a=%d b=%d c=%d d=%d\n", a, b, c, d);

	return 0;
}

#include <stdio.h>
int main()
{
	int  i = 0, a = 1, b = 2, c = 3, d = 4;

	//i = a++ && ++b && d++;
	i = a++ || ++b || d++;
	printf("a=%d b=%d c=%d d=%d\n", a, b, c, d);

	return 0;
}