Rastgele Sayı Yazdıran ve Yazdırma Süresini Bulan Program

#include 
#include 
#include 
#include 

int main(){
 unsigned int sayi[999],sayi2[999];
 int a=0,b=0,x=0,y=0;
 srand(time(0));
 
    clock_t start_t, end_t;
 clock_t start2_t, end2_t;
    start_t = clock();
    start2_t = clock();
 for(x=0;x<=999;x++){
  sayi[x]=rand()%90000+10000;
  printf("\t%u\t",sayi[x]);
  a=a+1;
       end_t = clock();
           
      sayi2[y]=rand()%90000+10000;
      printf("\t\t\t\t\t%u\n",sayi[y]);
      b=b+1; 
      y=y+1;
         end2_t = clock();
 
 }
   
    printf("%d Sayi %f Saniyede Uretildi.\t",a,(double) (end_t - start_t)/(double)CLOCKS_PER_SEC);
    printf("%d Sayi %f Saniyede Uretildi.",b,(double) (end2_t - start2_t)/(double)CLOCKS_PER_SEC);
   
 
 getch();
 return 0;
}