thieumao

Đồng hồ cát

Mar 16th, 2018
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C++ 0.53 KB | None | 0 0
  1. #include <iostream>
  2.  
  3. void printStar(int n) {
  4.     for (int i=0; i<n; i++) {
  5.         std::cout << "*";
  6.     }
  7.     std::cout << "\n";
  8. }
  9.  
  10. void printSpace(int n) {
  11.     for (int i=0; i<n; i++) {
  12.         std::cout << " ";
  13.     }
  14. }
  15.  
  16. void print(int n){
  17.     int space = 0;
  18.     for (int i=n; i> 0; i=i-2){
  19.         printSpace(space++);
  20.         printStar(i);
  21.     }
  22.     for (int i=1; i<=n; i=i+2){
  23.         printSpace(--space);
  24.         printStar(i);
  25.     }
  26. }
  27.  
  28. int main(int argc, const char * argv[]) {
  29.     print(7);
  30.     return 0;
  31. }
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