二进制数.c

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/*递归法求二进制数*/

#include<stdio.h>

void printb(int x,short int n);

void main()
{
    short int x;
    printf("input number:");
    scanf("%d",&x);
    printf("number of decimal form: %d\n",x);
    printb(x,sizeof(short int)*8);
    putchar('\n');
}


void printb(int x,short int n)
{
    if(n>0)
    {
        putchar('0'+( (x & (1<<(n-1)) )   >>   (n-1)));
        printb(x,n-1);
    }
}