地球人用十进制是因为有十根手指,外星人有20根呢?
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cstring>
#include <cmath>
#define MIN(a,b) (a<b?a:b)
#define MAX(a,b) (a>b?a:b)
#define mem(a,b) memset(a,b,sizeof(a))
using namespace std;
char str1[110], str2[110];
int num1[110], num2[110], num[110];
int main(){
int i, j;
int len1, len2, len;
while(scanf("%s%s", str1, str2)){
mem(num1, 0);
mem(num2, 0);
mem(num, 0);
len1 = strlen(str1);
len2 = strlen(str2);
len = MAX(len1, len2);
/*转换为20进制*/
for(i=0; i<len1; ++i){
if(str1[i]>='0'&&str1[i]<='9')
num1[len1-i] = str1[i]-'0';
else num1[len1-i] = str1[i]-'a'+10;
}
for(i=0; i<len2; ++i){
if(str2[i]>='0'&&str2[i]<='9')
num2[len2-i] = str2[i]-'0';
else num2[len2-i] = str2[i]-'a'+10;
}
/*相加*/
for(i=1; i<=len+1; ++i){
num[i] = num[i-1]/20+num1[i]+num2[i];
num[i-1] = num[i-1]%20;
}
//去除前面的0
for(i=len+1; i>1; --i)
if(num[i])
break;
for (j=i; j>0; --j){
if(num[j]>9)
printf("%c", num[j]-10+'a');
else printf("%d", num[j]);
}
printf("\n");
}
return 0;
}