Drink soda, 1 bottles of soda 1 yuan, 2 empty bottles can be replaced by a bottle of soda, to 20 yuan, can be how much soda.

#include <stdio.h>
#include <windows.h>
int s (int t)
{
int z = 0;
int h = 0;
int sum = t;

while (t>1)
{if (t%2==0)
{
SUM=SUM+T/2;
T=T/2;
}
else if (t%2==1)
{
SUM=SUM+T/2;
T=T/2;
h++;
if (h==2)
{sum++;
h=0;
}

}
}
if (h==1&&t==1)
{sum++;}
printf ("The number of drinks you can buy is%d\n", sum);
}
int main ()
{int k = 0;
int money = 0;
printf ("Please input the amount of money \ n");
do{
scanf ("%d", &k);
if (k<0)
{
printf ("Input not valid, please re-enter \ n");


}
}while (k<0);

Money = s (k);




System ("pause");
return 0;
}