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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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0 0
Case 0: Correct output
Case 1: Correct output
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