Pascal Triangle in C using 2d Array

Learn about Pascal Triangle in C using 2d Array in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

Contents

Pascal Triangle in C using 2d Array

To print a pascal triangle like below then follow the below C program.

Program:

#include<stdio.h>
int main(void)
{
  int n, i, j ;

  printf("Enter the number of rows: ");
  scanf("%d",&n);

  int pascal[n][n];
  for(i=0;i<n;++i)
  {
       
    for(int s=1; s<=40-i; s++)
    printf(" "); //space

    for(int j=0;j<=i;++j)
    {
      if(j==0||j==i) pascal[i][j]=1;
      else
      pascal[i][j] = pascal[i-1][j-1] + pascal[i-1][j];

      printf("%d ",pascal[i][j]);
    }

    printf("\n");
  }

  return 0 ;
}

Output:

Enter the number of rows: 5
                                        1 
                                       1 1 
                                      1 2 1 
                                     1 3 3 1 
                                    1 4 6 4 1

Hope above code works for you and Refer the below Related Codes to gain more insights. Happy coding and come back again.