helping a brother out

#include <stdio.h>

int  saisi(ch,min,max)
{
    int  x;
    do
    {
        printf("donner %s dans l'intervalle[%d,%d]:  ",ch,min,max);
        scanf("%d",&x);
    }while(x<min || x>max);
    return x;
}
void division(int x,int y,int *q,int *r)
{
    *q=0;
    while(x-y>=0)
    {
        x-=y;
        *q+=1;
        //printf("%d\t%d\n",x,*q);
    }
    *r=x;
}

void main()
{
    FILE *div;
    div = fopen(<insert path for your file here>,"w+");

    int   x, y,quot,reste, *q, *r;
    int nbDiv;

    q=&quot; r=&reste;
    scanf("%d",&nbDiv);
    for (int a=0;a<nbDiv;a++)
    {
        x=saisi("dividende",0,65535);
        y=saisi("diviseur",1,65535);
        division(x,y,q,r);
        fprintf(div,"Division %d: %d/%d =  %d reste %d\n",a+11,x,y,quot,reste);
    }
    fclose(div);
}