c program to create dos command dir

#include
#include
int main(int count,char *argv[]){
    struct find_t q ;
    int a;
    if(count==1)
         argv[1]="*.*";
    a = _dos_findfirst(argv[1],1,&q);
    if(a==0){
         while (!a){
             printf(" %s\n", q.name);
             a = _dos_findnext(&q);
         }
    }
    else{
         printf("File not found");
    }
    return 0;
}