[理工] [計概]幾題程式的問題

[jvvbn0601 (part2)]

(a)What's the output of the following C++ program?

#inclue <iostream>
using namespace std;

int main{}
{
        int a=5,b=10,c=15,n,m,p;
        c+=5;
        n=++a*--b;
        m=a+-b*c%b;
        p=a++*b+c/b*3;

        cout<<"m = "<<m << ", n = " << n << ",p = " << p << end1;
        return 0;
}
------------------------------------------------------------------
(b)What's the output of the following C++ program?

#inclue <iostream>
using namespace std;

int main{}
{
        int a[3][6];
        int i,j;
        for(i=0;i<3;i++)
           for(j=0;j<6;j++)
              a[i][j] = (i+1)*(j+2);
        int *p=&a[0][0];
        int *p0=a[0];
        int *p1=a[1];
        int *p2=a[2];
        cout << "*(p+2*5)= " << *(p+2*5) << ", *p1 = "<< *p1 << end1;
        cout << "p2[6] = " << p2[5] << ", *(p0+5) =" << *(p0+5) << end1;
        return 0;
}


有關運算子和指標的地方我有點不懂
(a)是什麼要先算呢?n=++a*--b;
   是(++a)*(--b)還是++(a*--b)
(b)掛了ˊˋ

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 114.43.205.218