I am having some trouble with my program. I am trying to print out my queue but its just printing garbage values. Hopefully can maybe take a few minutes to go over the code and see what is going wrong. I know the actual program really doesn't make sense but this is the way I need to do it. Thanks
Code:#include <stdio.h> #include <stdlib.h> #include <time.h> typedef struct { char *name; int number; } SomeSeq; typedef struct QueueNodeTag{ SomeSeq *item; struct QueueNodeTag *link; }QueueNode; typedef struct{ QueueNode *front; QueueNode *rear; }Queue; //function prototypes void getbuf(Queue **Q,QueueNode **Temp); int GetNumberOfSomeSeqsToGenerate(); SomeSeq * GetNextSomeSeq(void); void Print(void); int main() { /* initialize random seed: */ srand ( time(NULL) ); Print(); } void getbuf(Queue **Q,QueueNode **Temp) { int n = GetNumberOfSomeSeqsToGenerate(); //creates as many SomeSeqs as user requests and //adds them to the list for(int i =0;i<n;i++) { (*Temp) = (QueueNode*)malloc(sizeof(QueueNode)); if ((*Temp) == NULL) { return;// (char*) buff; }else{ (*Temp)->item = GetNextSomeSeq(); (*Temp)->link = NULL; if ((*Q)->rear == NULL){ (*Q)->front = (*Temp); (*Q)->rear = (*Temp); }else{ (*Q)->rear->link = (*Temp); (*Q)->rear = (*Temp); } } } } // int GetNumberOfSomeSeqsToGenerate() { int n = 0; printf("GetNumberOfSomeSeqsToGenerate():"); scanf("%d",&n); return n; } // Return the next structure (to fill the // abovementioned list with). SomeSeq * GetNextSomeSeq() { SomeSeq p; int names; p.number = rand() % 100 + 1; names = rand() % 10 + 1 ; switch(names) { case 1: p.name="John"; break; case 2: p.name="Mike"; break; case 3: p.name="Sally"; break; case 4: p.name="Samus"; break; case 5: p.name ="Epona"; break; case 6: p.name = "JJ"; break; case 7: p.name = "Matt"; break; case 8: p.name = "Sandy"; break; case 9: p.name="Ken"; break; case 10: p.name="Todd"; break; } return &p ; } void Print() { Queue *Q; Q =(Queue*)malloc(sizeof(Queue)); Q->front=NULL; Q->rear=NULL; QueueNode *Temp; Temp = NULL; getbuf(&Q,&Temp); while(Q->front->link != NULL) { printf("%d %s\n",Q->front->item->number,Q->front->item->name); //Its printing garbage values here Q->front = Q->front->link; } free(Temp); free(Q); }
