#include <bits/stdc++.h>
using namespace std;
int main() {
int a,b;
char c;
cout << "Nhap so a: ";
cin >> a;
cout << "Nhap so b: ";
cin >> b;
cout << "Nhap ki tu +,-,*,/: ";
cin >> c;
if(c=='-'){
cout << a << " - " << b << " = " << a - b << endl;
}else if(c == '+'){
cout << a << " + " << b << " = " << a + b << endl;
}else if(c == '*'){
cout << a << " * " << b << " = " << a * b << endl;
}else{
cout << a << " / " << b << " = " << (double)(a)/(double)(b) << endl;
}
return 0;
}
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