Write a C program to print triangle numbers pattern using for loop.
#include <stdio.h>
int main()
{
int rows;
printf("Enter Triangle Number Pattern Rows = ");
scanf("%d", &rows);
printf("Printing Triangle Number Pattern\n");
for (int i = 1; i <= rows; i++)
{
for (int j = rows; j > i; j--)
{
printf(" ");
}
for (int k = 1; k <= i; k++)
{
printf("%d ", k);
}
printf("\n");
}
}
This example prints the triangle pattern of numbers using a while loop.
#include <stdio.h>
int main()
{
int i, j, k, rows;
printf("Enter Triangle Number Pattern Rows = ");
scanf("%d", &rows);
printf("\n");
i = 1;
while (i <= rows)
{
j = rows;
while (j > i)
{
printf(" ");
j--;
}
k = 1;
while (k <= i)
{
printf("%d ", k);
k++;
}
printf("\n");
i++;
}
}
Enter Triangle Number Pattern Rows = 9
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9 Write a program to print triangle numbers pattern using a do while loop.
#include <stdio.h>
int main()
{
int i, j, k, rows;
printf("Enter Rows = ");
scanf("%d", &rows);
printf("\n");
i = 1;
do
{
j = rows;
do
{
printf(" ");
} while (j-- > i);
k = 1;
do
{
printf("%d ", k);
} while (++k <= i);
printf("\n");
} while (++i <= rows);
}
Enter Rows = 13
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12 13