c语言产生随机数并排序

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

#define TRUE 1
#define FALSE 0
#define N 100

int a
;
int i,j;
int *get_array(){
static int flag = 1;
for(i=0;i<N;i++)
{
a[i]=rand()%100;
for(j=0;j<i;j++){
if(a[j]==a[i]){
a[j]=rand()%100;
}
}
}
return a;
}

int *sort(int *a)
{
int tmp;
for(i=0;i<N;i++)
for(j=0;j<i;j++)
{
if(*(a+i)> *(a+j)){
tmp = *(a+i);
*(a+i) = *(a+j);
*(a+j) = tmp;
}
}
return a;

}

int main()
{
int *t;
int *h;
static int first_time = TRUE;
if(first_time){
first_time = FALSE;
srand((unsigned int)time(NULL));
}

t=get_array();
for(i=0;i<N;i++){
printf("%d ",*(t+i));
}
printf("\n");
printf("%s\n","*********************");
h=sort(t);
for(i=0;i<100;i++)
{
printf("%d ",*(h+i));
}
return 0;
}