To this day, Power over Ethernet (PoE) continues to gainpopularity in today’s networking world. The 12.95Wdelivered to the Powered Device (PD) input supplied bythe Power Sourcing Equipment (PSE) is a universal supply.Each PD provides its own DC/DC conversion from anominal 48V supply, thus eliminating the need for a correctvoltage wall adapter. However, higher power devicescan not take advantage of standard PoE because of itspower limitations, and must rely on a large wall adapteras their primary supply. The new LTC4268-1 breaks thispower barrier by allowing for power of up to 35W for suchpower-hungry 2-pair PoE applications. The LTC4268-1provides a complete solution by integrating a high powerPD interface control with an isolated fl yback controller.
溫度華氏轉(zhuǎn)變攝氏
#include <stdio.h>
#include <stdlib.h>
enum x {A,B,C,D,E}
int main(void)
{
int a=73,b=85,c=66
{
if (a>=90)
printf("a=A等級(jí)!!\n")
else if (a>=80)
printf("73分=B等級(jí)!!\n")
else if (a>=70)
printf("73分=C等級(jí)!!\n")
else if (a>=60)
printf("73分=D等級(jí)!!\n")
else if (a<60)
printf("73分=E等級(jí)!!\n")
}
{
if (b>=90)
printf("b=A等級(jí)!!\n")
else if (b>=80)
printf("85分=B等級(jí)!!\n")
else if (b>=70)
printf("85分=C等級(jí)!!\n")
else if (b>=60)
printf("85分=D等級(jí)!!\n")
else if (b<60)
printf("85分=E等級(jí)!!\n")
}
{
if (c>=90)
printf("c=A等級(jí)!!\n")
else if (c>=80)
printf("66分=B等級(jí)!!\n")
else if (c>=70)
printf("66分=C等級(jí)!!\n")
else if (c>=60)
printf("66分=D等級(jí)!!\n")
else if (c<60)
printf("66分=E等級(jí)!!\n")
}
system("pause")
return 0
}
溫度華氏轉(zhuǎn)變攝氏
#include <stdio.h>
#include <stdlib.h>
enum x {A,B,C,D,E}
int main(void)
{
int a=73,b=85,c=66
{
if (a>=90)
printf("a=A等級(jí)!!\n")
else if (a>=80)
printf("73分=B等級(jí)!!\n")
else if (a>=70)
printf("73分=C等級(jí)!!\n")
else if (a>=60)
printf("73分=D等級(jí)!!\n")
else if (a<60)
printf("73分=E等級(jí)!!\n")
}
{
if (b>=90)
printf("b=A等級(jí)!!\n")
else if (b>=80)
printf("85分=B等級(jí)!!\n")
else if (b>=70)
printf("85分=C等級(jí)!!\n")
else if (b>=60)
printf("85分=D等級(jí)!!\n")
else if (b<60)
printf("85分=E等級(jí)!!\n")
}
{
if (c>=90)
printf("c=A等級(jí)!!\n")
else if (c>=80)
printf("66分=B等級(jí)!!\n")
else if (c>=70)
printf("66分=C等級(jí)!!\n")
else if (c>=60)
printf("66分=D等級(jí)!!\n")
else if (c<60)
printf("66分=E等級(jí)!!\n")
}
system("pause")
return 0
}
給定兩個(gè)集合A、B，集合內(nèi)的任一元素x滿足1 ≤ x ≤ 109，并且每個(gè)集合的元素個(gè)數(shù)不大于105。我們希望求出A、B之間的關(guān)系。
任 務(wù) ：給定兩個(gè)集合的描述，判斷它們滿足下列關(guān)系的哪一種：
A是B的一個(gè)真子集，輸出“A is a proper subset of B”
B是A的一個(gè)真子集，輸出“B is a proper subset of A”
A和B是同一個(gè)集合，輸出“A equals B”
A和B的交集為空，輸出“A and B are disjoint”
上述情況都不是，輸出“I m confused!”
