题目内容

若有说明;int *p,m=5,n;以下正确的程序段的是________.

A. p=&n;scanf("%d",&p);
B. p=&n;scanf("%d",*p);
C. scanf("%d",&n);*p=n;
D. p=&n;*p=m;

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有以下程序#include int main(){int m=1,n=2,*p=&m,*q=&n,*r;r=p;p=q;q=r;printf("%d,%d,%d,%d\n",m,n,*p,*q);return 0;}程序运行后的输出结果是:

A. 1,2,1,2
B. 1,2,2,1
C. 2,1,2,1
D. 2,1,1,2

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