problema con manejo de nodos en linux

ayuda tengo un problema con este codigo al compilar en gcc

#include<stdio.h>
#include<stdlib.h>

void insertarnodoinicio();
void insertarnodoalfinal();
void insertarentrenodos();
void eliminarnodoinicio();
void eliminarnodofinal();
void eliminarentredosnodos();
void buscarnumero();
void mostrarnodo();

struct dato{
  dato *psig;
  int numero;
};

   dato *cab=NULL;
   dato *n=NULL;
   dato *aux=NULL;
   dato *p=NULL;
   dato *q;
   int x,pos,numerodenodos=0,opc;

   main()
   {
   do{
   printf("\n************************* ELIGE UNA OPCION **********************************\n\n");
   printf(" 1.-Insertar Un Nodo al Inicio\n");
   printf(" 2.-Insertar Un Nodo al Final\n");
   printf(" 3.-Insertar entre dos Nodos\n");
   printf(" 4.-Mostrar Lista\n");
   printf(" 5.-Buscar Nodo\n");
   printf(" 6.-Eliminar Nodo al Inicio\n");
   printf(" 7.-Eliminar Nodo Final\n");
   printf(" 8.-Eliminar Entre dos nodos\n");
   printf(" 9.-Salir\n");
   printf("\n\nTeclee su opcion: ");
   scanf("%d",&opc);

   switch(opc){
   case 1:
   insertarnodoinicio();
   break;

   case 2:
   insertarnodoalfinal();
   break;

   case 3:
   insertarentrenodos();
   break;

   case 4:
   mostrarnodo();
   break;

   case 5:
   buscarnumero();
   break;

   case 6:
   eliminarnodoinicio();
   break;

   case 7:
   eliminarnodofinal();
   break;

   case 8:
   eliminarentredosnodos();
   break;

   case 9:
   exit(0);break;

   default:
   printf("Opcion no valida");break;
   }

   }while(opc!=9);
   getch();


   }



void eliminarentredosnodos()
{
   q=cab;
   int h=1;
   if (cab=NULL)

   printf("La lista esta vacia");


   else
   {
   printf("Ingrese Nodo a eliminar: ");
   scanf("%d",&x);
   while (q->numero!=x && h==1)
   {
   if (q->psig!=NULL)
   {
   p=q;
   q=q->psig;
   }
   else

   h=0;
   }
   if (p->psig==NULL)
   printf("Elemento no Encontardo");
   else
   {
   if (cab=q)
   cab=q->psig;
   else
   p->psig=q->psig;
   }

   delete(q);
   }

   getch();
   system("CLS");
}




void eliminarnodofinal()
{
   p=cab;
   if (cab==NULL)
   printf("No hay Numeros en la lista");
   if (cab->psig==NULL)
   {
   delete (cab);
   cab=NULL;
   }

   else
   {

   while(p->psig!=NULL)
   {
   aux=p;
   p=p->psig;
}
   aux->psig=NULL;
   delete p;
   numerodenodos--;
}
getch();
system("cls");
}

void eliminarnodoinicio()
{

   if (cab==NULL)
   printf("No hay numeros que eliminar");
   else
   {

   aux=cab;
   cab=cab->psig;
   delete (aux);
   aux=NULL;
   numerodenodos--;
}
getch();
system("cls");
}


void buscarnumero()
{
   int eli;
   if (cab==NULL)
   {
   printf("No hay numeros en la lista");
   }
   else
   {
   q=cab;
   printf("Que Numero desea buscar: ");
   scanf("%d",&x);
   pos=1;
   while(q!=NULL && q->numero!=x)
   {
   q=q->psig;
   pos++;
   }

   if (q!=NULL)
   printf("%d Esta en la lista y en la posicion %d\n",x,pos);


   else
   {
   printf("%d No esta en la lista\n",x);

   }
}

getch();
system("cls");

}

void insertarnodoinicio(){
n=(dato*)malloc(sizeof (struct dato));
printf("\nElementos a insertar: ");
scanf("%d",&x);
n->numero=x;
n->psig=NULL;
if(cab==NULL)
cab=n;

else{
n->psig=cab;
cab=n;
}
numerodenodos++;

system("CLS");

}

void mostrarnodo()
{
if(cab==NULL)
printf("Lista vacia.........\n");

else{
p=cab;
printf("\nLista de numeros...\n");
while(p!=NULL){
printf("\n%d\n",p->numero);
p=p->psig;
}
printf("\nEl numero de nodos es: %d ",numerodenodos);


}
getch();
system("CLS");
}

void insertarnodoalfinal()
{
n= (dato*)malloc(sizeof(dato));
printf("Ingresa dato: ");
scanf("%d",&x);
n->numero=x;
n->psig=NULL;
if(cab==NULL){
cab=n;
numerodenodos++;
}
else{
p=cab;
while(p->psig!=NULL)
{
p=p->psig;
}
p->psig=n;
numerodenodos++;
}
getch();
system("CLS");

}

   void insertarentrenodos()
{
   if(cab==NULL)
   printf("No hay elementos");
   else
   {


   printf("Ingrese la posicion en que desees insertar: ");
   scanf("%d",&pos);

   if(pos> numerodenodos || pos==1)
   printf("Solamente es valido entre 2 nodos");
   else
   {
   n=(dato*)malloc(sizeof(dato));
   printf("Ingresa dato: ");
   scanf("%d",&x);
   n->numero=x;
   n->psig=NULL;
   aux=cab;
   for(int i=1; i<pos-1; i++)

   {
   aux=aux->psig;
   }
   n->psig=aux->psig;
   aux->psig=n;
   numerodenodos++;
   }
   }
   getch();
   system("cls");
}

tengo este programa pero tengo un error cuando intento compilar con gcc me marca lo siguiente alguien ayuda
ListasSimples.c:16:3: error: unknown type name ‘dato’
   dato *psig;
   ^
ListasSimples.c:20:7: error: unknown type name ‘dato’
   dato *cab=NULL;
   ^
ListasSimples.c:21:7: error: unknown type name ‘dato’
   dato *n=NULL;
   ^
ListasSimples.c:22:7: error: unknown type name ‘dato’
   dato *aux=NULL;
   ^
ListasSimples.c:23:7: error: unknown type name ‘dato’
   dato *p=NULL;
   ^
ListasSimples.c:24:7: error: unknown type name ‘dato’
   dato *q;
   ^
ListasSimples.c:27:7: warning: return type defaults to ‘int’ [-Wimplicit-int]
   main()
   ^
ListasSimples.c: In function ‘main’:
ListasSimples.c:84:37: warning: implicit declaration of function ‘getch’ [-Wimplicit-function-declaration]
   getch();
   ^
ListasSimples.c: In function ‘eliminarentredosnodos’:
ListasSimples.c:104:22: error: request for member ‘numero’ in something not a structure or union
   while (q->numero!=x && h==1)
   ^
ListasSimples.c:106:19: error: request for member ‘psig’ in something not a structure or union
   if (q->psig!=NULL)
   ^
ListasSimples.c:109:35: error: request for member ‘psig’ in something not a structure or union
   q=q->psig;
   ^
ListasSimples.c:115:24: error: request for member ‘psig’ in something not a structure or union
   if (p->psig==NULL)
   ^
ListasSimples.c:120:28: error: request for member ‘psig’ in something not a structure or union
   cab=q->psig;
   ^
ListasSimples.c:122:24: error: request for member ‘psig’ in something not a structure or union
   p->psig=q->psig;
   ^
ListasSimples.c:122:32: error: request for member ‘psig’ in something not a structure or union
   p->psig=q->psig;
   ^
ListasSimples.c:125:19: warning: implicit declaration of function ‘delete’ [-Wimplicit-function-declaration]
   delete(q);
   ^
ListasSimples.c: In function ‘eliminarnodofinal’:
ListasSimples.c:140:12: error: request for member ‘psig’ in something not a structure or union
   if (cab->psig==NULL)
   ^
ListasSimples.c:149:12: error: request for member ‘psig’ in something not a structure or union
   while(p->psig!=NULL)
   ^
ListasSimples.c:152:8: error: request for member ‘psig’ in something not a structure or union
   p=p->psig;
   ^
ListasSimples.c:154:8: error: request for member ‘psig’ in something not a structure or union
   aux->psig=NULL;
   ^
ListasSimples.c:155:5: error: unknown type name ‘delete’
   delete p;
   ^
ListasSimples.c: In function ‘eliminarnodoinicio’:
ListasSimples.c:176:17: error: request for member ‘psig’ in something not a structure or union
   cab=cab->psig;
   ^
ListasSimples.c: In function ‘buscarnumero’:
ListasSimples.c:200:24: error: request for member ‘numero’ in something not a structure or union
   while(q!=NULL && q->numero!=x)
   ^
ListasSimples.c:202:9: error: request for member ‘psig’ in something not a structure or union
   q=q->psig;
   ^
ListasSimples.c: In function ‘insertarnodoinicio’:
ListasSimples.c:223:5: error: ‘dato’ undeclared (first use in this function)
  n=(dato*)malloc(sizeof (struct dato));
   ^
ListasSimples.c:223:5: note: each undeclared identifier is reported only once for each function it appears in
ListasSimples.c:223:10: error: expected expression before ‘)’ token
  n=(dato*)malloc(sizeof (struct dato));
   ^
ListasSimples.c:226:3: error: request for member ‘numero’ in something not a structure or union
  n->numero=x;
   ^
ListasSimples.c:227:3: error: request for member ‘psig’ in something not a structure or union
  n->psig=NULL;
   ^
ListasSimples.c:232:3: error: request for member ‘psig’ in something not a structure or union
  n->psig=cab;
   ^
ListasSimples.c: In function ‘mostrarnodo’:
ListasSimples.c:250:19: error: request for member ‘numero’ in something not a structure or union
  printf("\n%d\n",p->numero);
   ^
ListasSimples.c:251:5: error: request for member ‘psig’ in something not a structure or union
  p=p->psig;
   ^
ListasSimples.c: In function ‘insertarnodoalfinal’:
ListasSimples.c:263:6: error: ‘dato’ undeclared (first use in this function)
  n= (dato*)malloc(sizeof(dato));
   ^
ListasSimples.c:263:11: error: expected expression before ‘)’ token
  n= (dato*)malloc(sizeof(dato));
   ^
ListasSimples.c:266:3: error: request for member ‘numero’ in something not a structure or union
  n->numero=x;
   ^
ListasSimples.c:267:3: error: request for member ‘psig’ in something not a structure or union
  n->psig=NULL;
   ^
ListasSimples.c:274:9: error: request for member ‘psig’ in something not a structure or union
  while(p->psig!=NULL)
   ^
ListasSimples.c:276:5: error: request for member ‘psig’ in something not a structure or union
  p=p->psig;
   ^
ListasSimples.c:278:3: error: request for member ‘psig’ in something not a structure or union
  p->psig=n;
   ^
ListasSimples.c: In function ‘insertarentrenodos’:
ListasSimples.c:301:21: error: ‘dato’ undeclared (first use in this function)
   n=(dato*)malloc(sizeof(dato));
   ^
ListasSimples.c:301:26: error: expected expression before ‘)’ token
   n=(dato*)malloc(sizeof(dato));
   ^
ListasSimples.c:304:19: error: request for member ‘numero’ in something not a structure or union
   n->numero=x;
   ^
ListasSimples.c:305:19: error: request for member ‘psig’ in something not a structure or union
   n->psig=NULL;
   ^
ListasSimples.c:310:25: error: request for member ‘psig’ in something not a structure or union
   aux=aux->psig;
   ^
ListasSimples.c:312:19: error: request for member ‘psig’ in something not a structure or union
   n->psig=aux->psig;
   ^
ListasSimples.c:312:29: error: request for member ‘psig’ in something not a structure or union
   n->psig=aux->psig;
   ^
ListasSimples.c:313:21: error: request for member ‘psig’ in something not a structure or union
   aux->psig=n;