作者fb74123698 (PP瑄)
看板TransCSI
標題[問題] 100台聯大計概考古
時間Fri Jun 29 15:59:27 2012
4.Consider the C program on the right side.What will be printed on the standard output after program finishes?
struct point{int x;int y;};
int main(){
struct point p,q;
struct point *r;
r=&q;
q.x=p.y=1;
q.y=p.x=2;
r->x=2;
p.y=1;
printf("%d,%d",q.x,q.y);
return 0;
}
A.2,2 B.2,1 C.1,2 D.1,1 E.none of the above
2.A 2D array X[1...10][1...100]is declared in a program.The address of X[1][1]is 1200,and the size of each element of the array is 4.What address of X[3][2]is if the memory system uses row majar storage?
A.1232
B.1264
C.1328
D.2408
E.none of the above
請問這兩題的答案怎麼算
第二題 我算出來都不是ABCD裡..
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1F：推 forris:第二題我算是 2004 07/01 01:45
2F：→ forris:第一題是 A 嗎？ 07/01 01:46
3F：推 forris:用程式跑一次, 第一題是 A 無誤。 07/01 01:49
4F：→ forris:第一題重點在 call-by-reference. r & q 共用記憶體空間 07/01 01:50
5F：→ forris:原本 q.x = 1, 後來 r.x = 2 --> q.x = 2 07/01 01:51
6F：→ fb74123698:第二題我也算2004,沒在答案上比較不放心..第一題大概了 07/01 02:31
7F：→ fb74123698:解了,不過細微的得自己再去弄懂,真的謝謝你! 07/01 02:32