c語言數據結構編程題，生成隨機數？

#include<stdlib.h>

#include<time.h>

void bubbleSort(int arr[],int len){ int temp,i,j;

for(i=0;i<len-1;i++)

for(j=0;j<len-1-i;j++){

if(arr[j]>arr[j+1];{

temp=arr[j];

arr[j]=arr[j+1];

arr[j+1]=arr[j+1];

arr[j+1]=temp;

}

}

}

int main(int argc,char *argv[]) { int i,a[100];

srand((unsigned int)time(NULL));

for(i=0;i<100;i++){ a[i]=rand()%1000; printf("%d\t",a[i]); }

bubbleSort(a,100);

for ( i=0;i<100;i++ ) printf("%d ",a[i]); printf("\n");

return 0;

}