数学趣题——应用递归实现数制转换

递归法将二进制转换为十进制

源码：

   1: #include <stdio.h>

   2: #include <math.h>

   3:  

   4: void biTOde(int n,int *sum,int *m)

   5: {

   6:     char c;

   7:     scanf("%c",&c);

   8:     if(c!='#'){

   9:         *m = *m +1;

  10:         biTOde(n+1,&(*sum),&(*m));

  11:     }

  12:     if(c == '1') *sum = *sum + pow(2,(*m)-n-1);

  13: }

  14:  

  15: int main()

  16: {

  17:     int sum = 0,m=0;

  18:     printf("Please input a binary number ending for '#'\n");

  19:     biTOde(0,&sum,&m) ;

  20:     printf("The Decimal Decimal digit is\n");

  21:     printf("%d ",sum);

  22:     return 0;

  23: }

  24: