Write a C program to print triangle of numbers in reverse pattern using for loop.
#include <stdio.h>
int main()
{
int rows;
printf("Enter Triangle of Numbers in Reverse Rows = ");
scanf("%d", &rows);
printf("Triangle of Numbers in Reverse Order Pattern\n");
for (int i = rows; i >= 1; i--)
{
for (int j = 1; j < i; j++)
{
printf(" ");
}
for (int k = i; k <= rows; k++)
{
printf("%d ", k);
}
printf("\n");
}
}
This C program prints the triangle pattern of numbers in descending order or reverse order using a while loop.
#include <stdio.h>
int main()
{
int i, j, k, rows;
printf("Enter Triangle of Numbers in Reverse Rows = ");
scanf("%d", &rows);
printf("Triangle of Numbers in Reverse Order Pattern\n");
i = rows;
while (i >= 1)
{
j = 1;
while (j < i)
{
printf(" ");
j++;
}
k = i;
while (k <= rows)
{
printf("%d ", k);
k++;
}
printf("\n");
i--;
}
}
Enter Triangle of Numbers in Reverse Rows = 9
Triangle of Numbers in Reverse Order Pattern
9
8 9
7 8 9
6 7 8 9
5 6 7 8 9
4 5 6 7 8 9
3 4 5 6 7 8 9
2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 This C example uses the do while loop to print the triangle of numbers in reverse order pattern.
#include <stdio.h>
int main()
{
int i, j, k, rows;
printf("Enter Triangle of Numbers in Reverse Rows = ");
scanf("%d", &rows);
printf("Triangle of Numbers in Reverse Order Pattern\n");
i = rows;
do
{
j = 1;
do
{
printf(" ");
} while (j++ < i);
k = i;
do
{
printf("%d ", k);
} while (++k <= rows);
printf("\n");
} while (--i >= 1);
}
Enter Triangle of Numbers in Reverse Rows = 5
Triangle of Numbers in Reverse Order Pattern
5
4 5
3 4 5
2 3 4 5
1 2 3 4 5