/*tim uoc chung cua 2 so dung vong lap do-while*/

#include<stdio.h>

#include<conio.h>

#include<math.h>

int main()

{

int m,n,a,b,tg;

char i;

do

{

printf("nhap so thu I:");scanf("%d",&m);

printf("nhap so thu II:");scanf("%d",&n);

a=m;b=n;

if(a<b)

{

tg=a;

a=b;

b=tg;

}/*doi vi tri so lon hon va so be hon*/

while(b!=0)

{

tg=a%b;

a=b;

b=tg;

}/*tim UCLN*/

printf("uoc so chung lon nhat cua %d va %d la: %d",m,n,a);

printf("

neu muon thoat nhan ESC

");

i=getch();

}while(i!=27);//27 la ma cua phim ESC

getch();

return 0;

}