以下选项中，不能对主函数中变量i和j的值进行交换的程序是
A.
B. include <stdio.h>void swap( int *p,int *q){ int *t; *t=*p; *p=*q; *q=*t;}main(){ int i=10,j=20, *a=&i, *b=&j; swap(a,b); printf("i=%d j= %d\n", i,j );}
C. B.
D. include <stdio.h>void swap( int *p,int *q){ int t; t=*p; *p=*q; *q=t;}main(){ int i=10,j=20, *a=&i, *b=&j; swap(a,b); printf("i=%d j= %d\n", i,j );}
E. C.
F. include <stdio.h>
G. include <stdlib.h>void swap( int *p,int *q){ int *t; t=(int *)malloc(sizeof(int)); *t=*p; *p=*q; *q=*t; free(t);}main(){ int i=10,j=20; swap(&i,&j); printf("i=%d j= %d\n", i,j );}
H. D.
I. include <stdio.h>void swap( int *p,int *q){ int t; t=*p; *p=*q; *q=t;}main(){ int i=10,j=20 , *x=&i, *y=&j; swap(x,y); printf("i=%d j= %d\n", i,j );}
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