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寫一個程式讀入四個整數a,b,c,d. 計算以(a,b)及(c,d)為兩對角頂點的長方形面積. 若(a,b)及(c,d)是水平或是垂直物共線則面積為0.

Sample Input:

-1 5 6 -3

Sample Output:

56

 

參考書籍:由片語學習C程式設計
[Normal] Coding (C) - asked in Introduction to Computer Programming I (C) by (20.9k points)
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#include <stdio.h>
#include <stdlib.h>

int main()
{
**** * ** ** * *** a1,b1,a2,b2,s;
** **** * **** * * **** * ** * * *** * ***
* *** * * ** ** * ** *** ** *** ** * *****
** * * ** * * **** ** * **
**** **** * ** **** **** * *
** ** ** * * * * ** **** ** ***** *
********* * * * ** *
* *** * * ***** * *** ** ** * *** ***
* * * * *** *** * ** * **** 0;
}
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Case 0: Correct output
Case 1: Correct output
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