uva 10494 - If We Were a Child Again

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我是靠谱客的博主默默小松鼠，最近开发中收集的这篇文章主要介绍uva 10494 - If We Were a Child Again，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

这道题给的数据非常重要只要注意到了不用大数的除法都可以做

因为除数是有限大的用整形就能保存下来然后就简单了模拟四则运算很容易就能做出来了取模也是一样的

字符串的比较函数用着老错自己写了一个

下面看代码

#include<cstdio>
#include<cstring>
#define MAX 1000000
#define LL long long
char str[MAX],result[MAX];

void Mod(char *s)
{
    int  str_len = strlen(str);
    int  s_len = strlen(s);
    LL c = 0;
    for(int  i = 0; i < s_len; i++)
        c =c*10+(s[i]-'0');
    LL sum = 0;
    for(int i = 0; i < str_len; i++)
    {
        sum = sum*10 + (str[i] - '0');
        if(sum >= c) sum %= c;
    }
    printf("%lldn",sum);
}

int cmp(char *p,char *q)
{
    if(strlen(p)<strlen(q))return 1;
    if(strlen(p)>strlen(q))return 0;
    for(int i = 0; i < strlen(q); i++)
        if(p[i] > q[i])return 0;
        else if(p[i] < q[i])return 1;
    return 0;
}

void Division(char *s)
{
    int  str_len = strlen(str);
    int  s_len = strlen(s);
    LL c = 0;
    for(int  i = 0; i < s_len; i++)
        c =c*10+(s[i]-'0');
    LL sum = 0;
    int flag = 0;
    for(int i = 0; i < str_len; i++)
    {
        sum = sum*10 + (str[i] - '0');
        if(sum >= c)
        {
            flag = 1;
            printf("%lld",sum/c);
            sum %=c;
        }
        else if(flag) printf("0");
    }
    printf("n");
}

int main()
{
    #ifdef LOCAL
    freopen("in.txt","r",stdin);
    #endif // LOCAL
    char sign,c[15];
    while(scanf("%s %c %s",str,&sign,c)!=EOF)
    {
        if(sign == '%')
        {
            if(cmp(str,c)){puts(str);continue;}
            if(strcmp(str,c)==0){printf("0n");continue;}
            Mod(c);
        }
        else
        {
            if(cmp(str,c)){printf("0n");continue;}
            if(strcmp(str,c) == 0){printf("1n");continue;}
            Division(c);
        }
    }
    return 0;
}