Hi there all,
i am relatively new to C programming and was having problems with the syntax in printing the towers of hanoi.
I want to print like below, i.e. a three towers with 3 pegs, tower one has one disc on the top, n the number of disc increase by one every peg.
|- | |
|-- | |
|--- | |
I am using stacks to do this. I think i have the logic right, to do this but can't figure out where am i doing wrong syntactically.
Can someone please help me out on this?
I have included the errors as well,
Thank You
AIk_21
#include<stdio.h>
typedef char Disc;
typedef char Bar;
typedef struct peg{
Bar bar;
int pegpos;
Disc dsc[5];
}Peg;
typedef struct towernode{
Peg pegvar;
struct TowerNode *next;
}TowerNode;
typedef struct tower{
TowerNode *top;
}Tower;
void CreateTower(Tower *s);
TowerNode *MakeNode(Bar item1, int num, Disc item2);
void Move(int num, Tower *t1, Tower *t2, Tower *t3);
void TowerPush(int num, Bar item1, Disc item2, Tower *s);
int N; /*global variable*/
void CreateTower(Tower *s){
s->top=NULL;
}
TowerNode *MakeNode(Bar item1, int num, Disc item2){
TowerNode *nodepointer;
if((nodepointer=malloc(sizeof(TowerNode)))==NULL)
printf("Out of memory\n");
else{
nodepointer->pegvar->bar=item1;
nodepointer->pegvar->pegpos=num;
nodepointer->pegvar->dsc[num]=item2;
}
return nodepointer;
}
/*to be used initially*/
void TowerPush(int num, Bar item1, Disc item2, Tower *s){
TowerNode *np=MakeNode(item1, num, item2);
if(np==NULL)
printf("Can't push on an non existing node\n");
else
{
np->next=s->top;
s->top=np;
}
}
void Move(int count, Tower *one, Tower *two, Tower *three)
{
if (count > 0) {
Move(count-1, one->top, two->top, three->top);
printf("Move a disk from %d to %d.\n", one, three);
Move(count-1, two->top, three->top, one->top);
}
}
int main(int argc, char *argv[]){
N=atoi(argv[1]); /*cast from char to int*/
Tower *t1,*t2,*t3;
CreateTower(t1);
CreateTower(t2);
CreateTower(t3);
TowerPush(N,'|','_',t1);
/* for(i=0;i<5;i++)
{
printf("%c|%c %c| %c|\n ",t1->peg[i],t1->disc[i],t2,t3);
}
Move(N,t1,t2,t3);
*/ return 0;
}
"to.c", line 33: warning: improper pointer/integer combination: op "="
"to.c", line 36: warning: improper pointer/integer combination: op "="
"to.c", line 37: warning: improper pointer/integer combination: op "="
"to.c", line 38: warning: improper pointer/integer combination: op "="
"to.c", line 52: warning: assignment type mismatch:
pointer to struct TowerNode {} "=" pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 66: warning: argument #2 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 66: warning: argument #3 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 66: warning: argument #4 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 68: warning: argument #2 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 68: warning: argument #3 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 68: warning: argument #4 is incompatible with prototype:
prototype: pointer to struct tower {pointer to struct towernode {..} top} : "to.c", line 64
argument : pointer to struct towernode {pointer to struct peg {..} pegvar, pointer to struct TowerNode {..} next}
"to.c", line 82: syntax error before or at: int
"to.c", line 84: syntax error before or at: *
"to.c", line 85: undefined symbol: t1
"to.c", line 85: warning: improper pointer/integer combination: arg #1
"to.c", line 86: undefined symbol: t2
"to.c", line 86: warning: improper pointer/integer combination: arg #1
"to.c", line 87: undefined symbol: t3
"to.c", line 87: warning: improper pointer/integer combination: arg #1
"to.c", line 88: warning: improper pointer/integer combination: arg #4
cc: acomp failed for to.c
