typedef struct{
    char arrpersonalheap[20][10];
}personalheap;
personalheap *personalarray;

//lfunction delete
void delete_min(int i, personalheap *(personalarray[i].arrpersonalheap), int *size){

int low_priority;
int child_index;
int root_index=0;
    low_priority=personalarray[i].arrpersonalheap[root_index];
    strcpy(personalarray[i].arrpersonalheap[root_index], personalarray[i].arrpersonalheap[*size]);
    (*size)--;
    child_index=(2*root_index)+1;
    while(child_index<=(*size)){
        if(strcmp(personalarray[i].arrpersonalheap[child_index], personalarray[i].arrpersonalheap[child_index+1])<0)
            child_index++;
        if(strcmp(personalarray[i].arrpersonalheap[child_index], personalarray[i].arrpersonalheap[root_index])>0){
            swapstruct(personalarray[i].arrpersonalheap[child_index], personalarray[i].arrpersonalheap[root_index]);
            root_index = child_index;
            child_index=2*root_index+1;
        }
        else
            break;
    }

}