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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4.  
  5. using namespace std;
  6.  
  7. #define PI 3.14159
  8.  
  9. void divide() {
  10.     float a, b;
  11.     double quotient;
  12.  
  13.     cout << "Nhap so a: ";
  14.     cin >> a;
  15.  
  16.     cout << "Nhap so b: ";
  17.     cin >> b;
  18.  
  19.     if (b == 0)
  20.     {
  21.         cout << "Phep chia khong hop le";
  22.         return;
  23.     }
  24.  
  25.     cout << "Thuong so la: " << fixed << setprecision(3) << a / b << '\n';
  26. }
  27.  
  28. void sum() {
  29.     int a;
  30.     float b, total;
  31.  
  32.     cout << "Nhap so a: ";
  33.     cin >> a;
  34.  
  35.     cout << "Nhap so b: ";
  36.     cin >> b;
  37.  
  38.     cout << "Tong hai so la: " << fixed << setprecision(3) << a + b << '\n';
  39. }
  40.  
  41. void calculate_age() {
  42.     int year;
  43.  
  44.     cout << "Nhap nam sinh: ";
  45.     cin >> year;
  46.  
  47.     cout << "Tuoi cua ban: " << 2025 - year << '\n';
  48. }
  49.  
  50. void ascii() {
  51.     char character;
  52.     int number;
  53.  
  54.     cout << "Nhap ky tu: ";
  55.     cin >> character;
  56.  
  57.     cout << "Nhap so: ";
  58.     cin >> number;
  59.  
  60.     cout << "Ma ASCII cua ky tu " << character << " la: " << int(character) << '\n';
  61.     cout << "Ky tu co ma ASCII bang " << number << " la: " << char(number) << '\n';
  62.  
  63. }
  64.  
  65. void perimeter_and_area_circle() {
  66.     float radius;
  67.  
  68.     cout << "Nhap ban kinh hinh tron: ";
  69.     cin >> radius;
  70.  
  71.     cout << "Chu vi hinh tron la: " << fixed << setprecision(5) << 2 * PI * radius << '\n';
  72.     cout << "Dien tich hinh tron la: " << fixed << setprecision(5) << PI * pow(radius, 2) << '\n';
  73. }
  74.  
  75. void perimeter_and_area_circular_cylinder() {
  76.     float radius, height;
  77.  
  78.     cout << "Nhap chu vi hinh tru: ";
  79.     cin >> radius;
  80.  
  81.     cout << "Nhap chieu cao hinh tru: ";
  82.     cin >> height;
  83.  
  84.     float dt_day = PI * pow(radius, 2);
  85.     float dt_xq = PI * 2 * radius * height;
  86.     float tt = dt_day * height;
  87.  
  88.     cout << "Dien tich day hinh tru: " << fixed << setprecision(5) << dt_day;
  89.     cout << "\nDien tich xung quanh hinh tru: " << fixed << setprecision(5) << dt_xq;
  90.     cout << "\nThe tich hinh tru: " << fixed << setprecision(5) << tt << '\n';
  91. }
  92.  
  93. void compute_equation() {
  94.     float x;
  95.  
  96.     cout << "Nhap vao gia tri x: ";
  97.     cin >> x;
  98.  
  99.     float y1 = 4 * (pow(x, 2) + 10 * x * sqrt(x) + 3 * x + 1);
  100.     float y2 = (sin(PI * pow(x, 2)) + sqrt(pow(x, 2) + 1)) / (exp(2 * x) + cos(x * PI / 4));
  101.  
  102.     cout << "Gia tri bieu thuc y1: " << fixed << setprecision(4) << y1 << '\n';
  103.     cout << "Gia tri bieu thuc y2: " << fixed << setprecision(4) << y2 << '\n';
  104. }
  105.  
  106. void exchange_money() {
  107.     int N;
  108.  
  109.     cout << "Nhap so tien N: ";
  110.     cin >> N;
  111.  
  112.     int count1 = 0, count2 = 0, count5 = 0, count10 = 0;
  113.     count10 = N / 10;
  114.     N = N % 10;
  115.     count5 = N / 5;
  116.     N = N % 5;
  117.     count2 = N / 2;
  118.     N = N % 2;
  119.     count1 = N;
  120.     cout << "So luong tien sau khi doi: " << count10 << " " << count5 << " " << count2 << " " << count1;
  121. }
  122.  
  123. int main() {
  124.     divide();
  125.     sum();
  126.     calculate_age();
  127.     ascii();
  128.     perimeter_and_area_circle();
  129.     perimeter_and_area_circular_cylinder();
  130.     compute_equation();
  131.     exchange_money();
  132.     return 0;
  133. }
Success #stdin #stdout 0.01s 5296KB
comments ()
stdin 
Standard input is empty
stdout 
Nhap so a: Nhap so b: Thuong so la: inf
Nhap so a: Nhap so b: Tong hai so la: 1049558528.000
Nhap nam sinh: Tuoi cua ban: -20008
Nhap ky tu: Nhap so: Ma ASCII cua ky tu  la: 0
Ky tu co ma ASCII bang 0 la: 
Nhap ban kinh hinh tron: Chu vi hinh tron la: 0.00000
Dien tich hinh tron la: 0.00000
Nhap chu vi hinh tru: Nhap chieu cao hinh tru: Dien tich day hinh tru: 0.00000
Dien tich xung quanh hinh tru: 0.00000
The tich hinh tru: 0.00000
Nhap vao gia tri x: Gia tri bieu thuc y1: 4.0000
Gia tri bieu thuc y2: 0.5000
Nhap so tien N: So luong tien sau khi doi: 107269324 1 1 1
https://ideone.com/dxkZQl
language:
C++ (gcc 8.3)
created:
16 days ago
visibility:
public

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