十进制转换二进制

include <stdio.h>

int main()
{
//进制转换函数的声明
int transfer(int x);
int x;
printf("请输入一个十进制数:");
scanf("%d",&x);
printf("转换成二进制数是:%d\n",transfer(x));
}
int transfer(int x)
{
int p=1,y=0,yushu;
while(1)
{
yushu=x%2;
x/=2;
y+=yushup;
p=10;
if(x<2)
{
y+=x*p;
break;
}
}
return y;
}