Nguyệt Nhi D19

Câu 4:
#include <iostream>
using namespace std;
int main()
{
    char mh ;
    cout<<"Ki tu chuyen sang ASCII la:";
    cin>> mh;
    mh=(int)mh;
    cout<<"Ma ASCII cua"<< mh <<"la:"<<(int)mh;
    return 0;
}
Câu 3:
#include <iostream>
using namespace std;
int main()
{
    float a;
    cout<<"nhap so a:";
    cin>> a;
    a=int(a);
    cout<<"phan nguyen cua so a="<<a;
    return 0;
}
Câu 2:
#include <iostream>
using namespace std;
int main()
{
    int a,b,tong,tich,hieu;
    float thuong;
    cout<<"nhap a:";
    cin>> a;
    cout<<"nhap b:";
    cin>> b;
    cout<<"tong="<<a+b<<endl;
    cout<<"hieu="<<a-b<<endl;
    cout<<"tich="<<a*b<<endl;
    cout<<"thuong="<<(float)a/b<<endl;
    return 0;
}
Câu 1:
#include <iostream>
using namespace std;
int main()
{
    cout<<"Hello World";
    return 0;
}