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#include <iostream>
#include <cstring>
#include <cstdlib>
#include <unistd.h>
#include <sstream>
#include <vector>
#include <memory>
#include <math.h>
using namespace std;class myDouble{private:int a;int b;public://myDouble(int a=0,int b=0){};myDouble(int a=0,int b=0):a(a),b(b){}void show(){cout <<a<<"."<<abs(b)<<endl;}myDouble operator+(const myDouble& r){myDouble temp;temp.a=this->a+r.a;temp.b=this->b+r.b;return temp;}	myDouble operator-(const myDouble& r){    myDouble temp;temp.a=this->a-r.a;temp.b=this->b-r.b;return temp;}   /*myDouble operator*(const myDouble& r){    myDouble temp;int ten=0,sum=0,count=0,count1=0,count2=0;int m=this->b,n=r.b;while(m/10!=0){count1++;m/=10;}while(n/10!=0){count2++;n/=10;}sum=(pow(10,count1)*this->a+this->b)*(pow(10,count2)*r.a+r.b);count=count1+count2;ten=pow(10,count);temp.a=sum/ten;temp.b=sum%ten;return temp;}   */myDouble operator*(const myDouble& r) {myDouble temp(0, 0);int count1 = countdi(this->b);  // this->b的小数位数int count2 = countdi(r.b);      // r.b的小数位数long long sum = (long long)(this->a * pow(10, count1) + this->b) * (long long)(r.a * pow(10, count2) + r.b);int count = count1 + count2;temp.a = sum / pow(10, count);temp.b = sum % (int)pow(10, count);return temp;}int countdi(int num) {int count = 0;if (num == 0) {return 1;  // 特殊情况：0有1位}while (num != 0) {num /= 10;  // 每次将数字除以10，直到它变为0count++;    // 每除一次，位数增加1}return count;}
};int main(int argc,const char** argv){myDouble x(3,14);myDouble y(2,41);//相加myDouble a=x+y;myDouble b=x-y;//a.show();//相加后的值a.show();b.show();myDouble z=x*y;z.show();
}

#include <iostream>
#include <cstring>
#include <cstdlib>
#include <unistd.h>
#include <sstream>
#include <vector>
#include <memory>
#include <math.h>
using namespace std;class myOut{public:myOut(){}myOut& operator<<(const int&value){    printf("%d",value);return *this;}   myOut& operator<<(const double&value){    printf("%f",value);return *this;}   myOut& operator<<(const char*value){    printf("%s",value);return *this;}   myOut& operator<<(const myOut&(myOut&)) {return manip(*this);}};
myOut out;
myOut endl(myOut& out)
{printf("\n");return out;
}
int main(int argc,const char** argv){out<<1;out<<3.14;out<<"fuck";out<<endl;
}