Rotating an array

/* shift.c -- It reads a sequence of positive integers. It stores it
*            in an array, then it prompts the user to enter an
*            integer, and then rotates clockwise the content of the 
*            array a corresponding number of positions. The contents 
*            the array are printed out whenever it changes.
*            For example, if the sequence was
*                 1,2,3,4,5
*            and the number 3 is entered, the array becomes
*                 3,4,5,1,2
*            and if the number 11 is now entered, the array becomes
*                 2,3,4,5,1
*            and if the number -4 is now entered, the array becomes
*                 1,2,3,4,5
*/

#include <stdio.h>
#define MAXN 8


/* It prints the current content on the array a with n elements */
void printarray(int a[], int n);
/* I will assume first that I have a number of functions then I will 
* write them.
*/

/* Given an array a with n values, shift rotates
* its content m positions, clockwise.
*/
void shift(int a[], int n, int m); 

/* getint prompts the user to enter a positive integer and returns 
* its value. 
*/                
int getint(void);

/* It requests the user to enter positive integers and stores
* them in a. It returns in n the number of integers stored
* in the array.
*/
void getarray(int a[], int *n);

int main(void) {
int table[MAXN];  /* array where we store the sequence */
int howmany=0;    /* number of elements in sequence */
int amount;       /* amount of shift */

getarray(table, &howmany);
if (howmany==0) {
printf("Sorry, you entered the null sequence. Good bye.\n");
}else {
do {
printarray(table,howmany);
printf("By how much do you want to shift[0 to terminate]? ");
scanf("%d",&amount);
if (amount!=0)
shift(table,howmany,amount);
}while(amount!=0);
}
}

/* Given an array a with n values, shift rotates
* its content m positions, clockwise.
*/
void shift(int a[], int n, int m){
int temp[MAXN];
int lcv;

if (m<0)
m = n-(abs(m)%n);
for (lcv=0;lcv<n;lcv++)
temp[(lcv+m)%n] = a[lcv];
for (lcv=0; lcv<n;lcv++)
a[lcv]=temp[lcv];
}

/* getint prompts the user to enter a positive integer and returns 
* its value. 
*/                
int getint(void){
int answer;

printf("Please enter a positive integer [<=0 to terminate] : ");
scanf("%d", &answer);
return answer;
}

/* It requests the user to enter positive integers and stores
* them in a. It returns in n the number of integers stored
* in the array.
*/
void getarray(int a[], int *n) {
int answer;
int i=0;

do {
answer = getint();
if (answer>0 && (i<MAXN))
a[i++]=answer;
}while(answer>0 && (i<MAXN));
*n = i;
}

/* It prints the current content of the array a with n elements */
void printarray(int a[], int n) {
int lcv;

for (lcv=0;lcv<n;lcv++){
printf("   %d",a[lcv]);
}
printf("\n");
}