Add source code of Assignment 1

assignment1.cpp

@@ -0,0 +1,58 @@
+#include <iostream>
+#include <math.h>
+
+using namespace std;
+
+void nhap(float &x){
+  cout << "Nhap so thuc x: ";
+  cin >> x;
+}
+
+void nhap(int &n, char c){
+  cout << "Nhap so nguyen " << c << ": ";
+  cin >> n;
+}
+
+void inc(int &n){
+  n++;
+}
+
+void dec(int &n){
+  n--;
+}
+
+float p(float x,int n){
+  float ans = 2018*pow(x,n);
+  for (int i=2;i<=n;i++){
+    ans += (pow(x,i)/pow(3,i-1));
+  }
+  return ans;
+}
+
+int tong(int n, int m){
+  int ans=0,start;
+  if (n>6 && n%2==0){
+    start=n;
+  }
+  else if (n>6 && n%2!=0){
+    start=n-1;
+  }
+  else start=6;
+  for (int i=start;i<=m;i+=2){
+    ans+=i;
+  }
+  return ans;
+}
+
+int main(){
+  float x;
+  nhap(x);
+  int n,m;
+  nhap(n,'n');
+  nhap(m,'m');
+  inc(n);
+  inc(m);
+  cout << "P(x,n) = " << fixed << p(x,n) << "\n";
+  cout << "Tong cac so chan lon hon 5 trong doan [" << n << ";" << m << "] la: " << tong(n,m) << "\n";
+  return 0;
+}