4/10打卡

4/10打卡 c++ 课本例题

#include<bits/stdc++.h>
using namespace std;

class Frac{
    public:
        Frac(int a = 0, int b = 0 ){
            for(int i = 2; i < a || i < b; i ++ ){
                if(a % i == 0 && b % i == 0){
                    a /= i;
                    b /= i;
                    i = 2;
                }
            }
            z = a;
            m = b;
        }
        friend Frac operator + (Frac &c1, Frac &c2){
            if(c1.m == c2.m) return Frac(c1.z + c2.z, c1.m);
            else return Frac(c1.z * c2.m + c2.z * c1.m, c1.m * c2.m);
        }
        void display(){
            cout << z << " " << m;
        }
    
    private:
        int z, m;
};

#include<bits/stdc++.h>
using namespace std;

#include<bits/stdc++.h>
using namespace std;

#include<bits/stdc++.h>
using namespace std;

int mian(){
	int day;
	cin >> day;
	
	switch (day){
		case 0{
			cout << "sunday" << endl;
			break;
		}
		case 1{
			cout << "monday" << endl;
			break;
		}
		case 2{
			cout << "tuesday" << endl;
			break;
		}
		case 3{

#include<bits/stdc++.h>
using namespace std;

int main()
{
	int year;
	bool isleapyear;
	cout << "Enter the year:";
	cin >> year;
	isleapyear = ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0));
	if(isleapyear)
		cout << year <<" is a leap year" << endl;
	else
		cout << year << "is not a leap year" << endl;
	return 0;
}

　　

#include<bits/stdc++.h>
using namespace std;

int main(){
	int i = 1, sum = 0;
	do {
		 sum += i;
		 i ++ ;
	}while(i <= 10); 
	
	cout << sum <<endl;
	
	return 0;
}

　　

cout << "wensday" << endl; break; } case 4{ cout << "Thursday" << endl; break; } case 5{ cout << "Friday" << endl; break; } case 6{ cout << "Saturdday" << endl; break; } } return 0; }

　　

const N = 4; int main(){ for(int i = 1; i <= N; i ++ ){ for(int j = 0; j < 30; j ++ ){ cout << " "; } for(int j = 0; j < 8 - 2 * i; j ++){ cout << " "; } for(int j = 0; j < 2 * i - 1; j ++ ){ cout << "*"; } cout << endl; } for(int i = 1; i <= N - 1; i ++ ){ for(int j = 0; j < 30; j ++){ cout << " "; } for(int j = 0; j < 7 - 2 * i; j ++ ){ cout << "*"; } cout << endl; } return 0; }

　　

int main(){ int i = 1, sum = 0; while(i <= 10){ sum += i; i ++ ; } cout << sum <<endl; redturn 0; }

　　

int main(){ int a, b, c, d; cin >> a >> b >> c >> d; Frac c1(a, b), c2(c, d), c3; c3 = c1 + c2; c3.display(); return 0; }

　　

#include<bits/stdc++.h>
using namespace std;

int main(){
	int x, y;
	cout << "Enter x , y ";
	cin >> x >> y;
	
	if(x > y) cout << x << ">" << y << endl;
	else if(x < y) cout << x << "<" << y << endl;
	else cout << x << "=" << y << endl;
	
	return 0;
}

　　

#include<bits/stdc++.h>
using namespace std;

int main(){
	int i = 1, sum = 0;
	do {
		 sum += i;
		 i ++ ;
	}while(i <= 10); 
	
	cout << sum <<endl;
	
	return 0;
}

　　

#include<bits/stdc++.h>
using namespace std;

int main(){
	int n;
	cin >> n;
	
	for(int i =1a ; i <= n; i++ ){
		if(n % i == 0)
			cout << i << " ";
		cout << endl;
		
	}
	return 0;
	
}