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  1. //
  2. //  main.cpp
  3. //  Pascal Triangle
  4. //
  5. //  Created by Himanshu on 20/09/21.
  6. //
  7.  
  8. #include <iostream>
  9. using namespace std;
  10.  
  11.  
  12. void printPascalTriangle (int n) {
  13.     int pascal[n+1][n+1];
  14.  
  15.     //Base case
  16.     pascal[1][1] = 1;
  17.  
  18.     for (int i=0; i<=n; i++) {
  19.         for (int j=0; j<=n; j++) {
  20.             pascal[i][j] = 0;
  21.         }
  22.     }
  23.  
  24.     for (int i=1; i<=n; i++) {
  25.         for (int j=1; j<=i; j++) {
  26.             // first and last binomial coefficients are
  27.             // always 1
  28.             if (i == 1 || j == i) {
  29.                 pascal[i][j] = 1;
  30.             } else {
  31.                 pascal[i][j] = pascal[i-1][j-1] + pascal[i-1][j];
  32.             }
  33.         }
  34.     }
  35.  
  36.     for (int i=1; i<=n; i++) {
  37.         for (int j=1; j<=i; j++) {
  38.             cout<<pascal[i][j]<<" ";
  39.         }
  40.         cout<<endl;
  41.     }
  42.  
  43. }
  44.  
  45. int main() {
  46.     int n = 7;
  47.     printPascalTriangle (n);
  48.  
  49.     return 0;
  50. }
  51.  
Success #stdin #stdout 0.01s 5616KB
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stdin
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Standard input is empty
stdout
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1 
1 1 
1 2 1 
1 3 3 1 
1 4 6 4 1 
1 5 10 10 5 1 
1 6 15 20 15 6 1
https://ideone.com/HoUY2k
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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