#include #include main() { char p[20]={'a','b','c','d'},q[]="abc",r[]="abcde";

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#include #include main() { char p[20]={'a','b','c','d'},q[]=
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#include #include main() { char p[20]={'a','b','c','d'},q[]="abc",r[]="abcde";
#include #include main() { char p[20]={'a','b','c','d'},q[]="abc",r[]="abcde";

#include #include main() { char p[20]={'a','b','c','d'},q[]="abc",r[]="abcde";
7. 有以下程序
#include
#include
main( )
{ char p[20]={‘a’,’b’,’c’,’d’},q[]=”abc”,r[ ]=”abcde”;
strcpy(p+strlen(q),r);
strcat(p,q);
printf(“%d %d\n”,sizeof(p),strlen(p));
}
程序运行后的输出结果是（ C ）.
A）20 9 B) 9 9 C) 20 11 D)11 11
详细解释不懂得不要瞎答

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