#!/bin/sh
num=100
cmd=`echo "obase=32;$num"|bc`
echo "$cmd"

程序代码：

#include <stdio.h>
#include <string.h>
#include <ctype.h>

#define MAX 1000
#define SYS  34       //最多36进制
const char strSYS[37] = {"0123456789abcdefghijklmnopqrstuvwxyz"};
int main(int argc, char *argv[])
{
    char strData[MAX]={"23789756567879787089746754456734657877659879790982354536658762134512455787697809870989809809824214124214214134"};
    int DataInt[MAX];
    int OutInt[MAX];
    int strDatalen = strlen(strData);
    //不考虑负数，小数     ，感觉没bug，反正就这个意思
    for(int i=0;i<strDatalen;i++)
    {
         DataInt[i]= strData[i]-'0';
    }
    int Numerator=0,Remainder,Quotient;
    int OutIntCount = 0;
    bool falg = true;

 while(falg)

 {
    falg =false;
    for(int i=0;i<strDatalen;i++)
    {
       Numerator = Numerator*10+ DataInt[i];
       Remainder = Numerator%SYS;
       Quotient =  Numerator/SYS;
       DataInt[i] = Quotient;
       Numerator = Remainder;
       if(Quotient)falg =true;
    }
    Numerator= 0;
    OutInt[OutIntCount++] = Remainder;
  // printf("%d",Remainder);
 }

    for(int i=OutIntCount-1;i>=0;i--)
    {
        printf("%c",strSYS[OutInt[i]] );
    }
    printf("\n");
    return 0;
}