C Program to print number a Right angled Triangle pattern

Program

#include<stdio.h>
void main()
{
	int num, i, j;
	printf("Enter the number of rows to print:\n");
	scanf("%d", &num);
	printf("Printing the series\n");
	for(i = 1; i <= num; i++)
	{
		for(j = 1; j <= i; j++)
			printf("%d", j);
		printf("\n");
	}
}

Output

Enter the number of rows to print:
6
Printing the series
1
12
123
1234
12345
123456