Thread: Help with this code please!

First of all, sorry about the language of arguments and functions(they are on spanish ). The problem is the following: I need to this function to get a random number between the limits 1 and the number inserted by the user, but I just get a random number that is not between these limits, here is the code.

Code:

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


struct Bombo{
       int n;
       int *v;
};


struct Bombo BomboCrea(int n){
      int i = 1;
      struct Bombo a;
      a.n = n;
      a.v = (int *)malloc(sizeof(int)*a.n);
      for(i; i<n; i++){
             a.v[i] = 1+(rand()%(n-1));
             printf("%d,",a.v[i]);
}
return a;
}


void BomboLibera(struct Bombo b){
     free(b.v);
}


int BomboExtrae(struct Bombo b){
    int a;
    int d;
    a = b.n;
    if(b.v == NULL){
         printf("El Bombo esta vacio");
         }else{
              d = (1+(rand()%(a-1)));
              };
return d;
}


int BomboVacio(struct Bombo b){
    int a;
    if(b.v == NULL){
         a = 1;
         }else{
               a = 0;
               }
return a;
}


int main(){
srand(time(NULL));
struct Bombo a;
int b;
int c;
int d;
int i = 0;
printf("Escribe el tamaño del bombo desde 1 a ... \n");
scanf("%d",&b);
BomboCrea(b);
c = BomboExtrae(a);
printf("El numero es %d \n",c);
BomboLibera(a);
d = BomboVacio(a);
system("pause");
return 0;
}

the function BomboCrea works fine, I checked it and this make an array between the 2 limits