标签:cout names i++ algorithm targe 高精度 精度 blank max
简单的高精度减法,无需解释~~~
#include<iostream>
#include<cstdio>
#include<string>
#include<vector>
#include<algorithm>
#include<cstdlib>
#include<cmath>
#include<stack>
#include<map>
using namespace std;
string s1,s2;
int A[501],B[501],C[501],i;
int main()
{
cin>>s1>>s2;
if(s1.length()<s2.length()||s1.length()==s2.length()&&s1<s2) swap(s1,s2),cout<<'-';
for(i=1;i<=s1.length();i++)
A[s1.length()-i+1]=s1[i-1]-'0';
for(i=1;i<=s2.length();i++)
B[s2.length()-i+1]=s2[i-1]-'0';
int len=max(s1.length(),s2.length());
for(i=1;i<=len;i++)
{
C[i+1]=(A[i]-B[i]+C[i])>=0?0:-1;
C[i]=(A[i]-B[i]+C[i]+(C[i+1]==0?0:10))%10;
}
for(i=len;i>=1;i--,len--)
if(C[i]!=0)break;
for(i=len;i>=1;i--)
cout<<C[i];
return 0;
}
标签:cout names i++ algorithm targe 高精度 精度 blank max
原文地址:https://www.cnblogs.com/gongdakai/p/11296133.html