Program to sort positive and negative numbers in C

#include
#include

int main()
{
    int a[100],i=0,l,j,t;
    
    printf(" enter a list of positive integers to be sorted enter negative no. to exit \n ");
    
    do
    {
               scanf("%i",&a[i]);
               i=i+1;
               }
               while(a[i-1]>=0);
                l=i-2;
               printf("the values you have entered are");
               for(i=0;i               {printf("the values you have entered are \n %i",a[i]);
               }
  for(i=l;i>0;i--)
  {
                  for(j=0;j                  {
                                  if(a[j]>a[j+1])
                                  {
                                                 t=a[j];
                                                 a[j]=a[j+1];
                                                 a[j+1]=t;
                                                 }
                                                 }
                                                 }
                                                 printf("sorted array is:\n");
                                                 for(i=0;i<=l;i=i+1) printf("%d \n",a[i]);
                                                 
                                              
    getch();           
    return 0;
}