c17su02t2 - CSc 17 Test 2 20 July 2002*SUGGESTED ANSWERS...

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CSc 17 Test 2 20 July 2002 ****************SUGGESTED ANSWERS************************* 1. (10 pts) What is the output of the following program? void a(int *p,int *&q) {p[1]=5; q=p; p=new int(14); } int main() { int *x,*y,v[]={1,2,3,4},z[]={6,7,8,9}; x=v; x[1]=0; for(int j=0;j<2;j++) cout<<v[j]<<" "<<x[j]<<endl; y=z; a(x,y); for(int j=0;j<2;j++) cout<<x[j]<<" "<<y[j]<<" "<<z[j]<<endl; return 0; } -------------------------------------------- 1 1 0 0 1 1 6 5 5 7 2. (20 pts) Given the DubNode class below write a function equal2() which which returns whether a linked list of doubles has two consecutive values which are identical. If we have DubNode *head; and head points to a linked list of doubles then equal2(head) will return true for the list 1.0->2.0->2.0->3.0 and false for the list 1.0->2.0->3.0. class DubNode {public: DubNode(double x=0,DubNode *nx=NULL); double getData(); void setData(double x); DubNode* next(); void setNext(DubNode *nx); private: DubNode *nextDubNode; double data; static void assert(bool b,char *mess); }; ------------------------------------------ bool equal2(DubNode *hd); bool equal2(DubNode *hd) {while(hd!=NULL && hd->next()!=NULL && hd->getData()!=hd->next()->getData()) hd=hd->next(); return hd!=NULL && hd->next()!=NULL; } 3.
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