How to implement right-aligning the Pascal’s Triangle i…

To achieve right alignment of Pascal’s Triangle, you can follow the steps below:

1. Create a two-dimensional array to store the elements of Pascal’s Triangle. The number of rows in the array should be equivalent to the number of rows in Pascal’s Triangle, while the number of columns should be equal to the maximum number of rows in the triangle.
2. By using two loops, the outer loop controls the number of rows while the inner loop controls the elements in each row.
3. In the inner loop, we determine whether to print a blank space by checking if the current element’s position is less than or equal to the number of rows. If a blank space needs to be printed, then we print one; otherwise, we print the current element’s value.
4. After the inner loop ends, print a newline character and move on to the next line of the loop.

Here is an example code to achieve right-aligned Pascal’s Triangle.

#include <stdio.h>

int main() {
    int rows, i, j;
    printf("请输入杨辉三角形的行数：");
    scanf("%d", &rows);

    int triangle[rows][rows];
    
    for (i = 0; i < rows; i++) {
        for (j = 0; j <= i; j++) {
            if (j < rows - i - 1) {
                printf(" ");
            } else {
                if (j == 0 || j == i) {
                    triangle[i][j] = 1;
                } else {
                    triangle[i][j] = triangle[i-1][j-1] + triangle[i-1][j];
                }
                printf("%d ", triangle[i][j]);
            }
        }
        printf("\n");
    }

    return 0;
}

The code above uses a 2D array called “triangle” to store the elements of Pascal’s Triangle. Within the inner loop, it determines whether to print a space by checking if the current element’s position is less than or equal to the row number. If a space is needed, it prints a space; otherwise, it prints the current element’s value. This achieves the right alignment printing effect of Pascal’s Triangle.