Print Initialized Right Triangle Number Pattern

June 23, 2019

PRINTING PATTERN:

3

44

555

6666

PREREQUISITE:

Basic knowledge of C language and use of loops.

ALGORITHM:

1. Initialise an integer variable count=3 for incrementing
2. Take the number of rows as input from the user  and store it in any variable.(‘r‘ in this case).
3. Run a loop ‘r’ number of times to iterate through each of the rows. From i=0 to i<r. The loop should be structured as for( i=0 ; i<r : i++).
4.  Run a nested loop inside the main loop to print the digits in each row of the triangle. From j=0 to j<i. The loop should be structured as for( j=0; j<=i ; j++).
5. In the nested loop print count.
6. In the main loop increment count and print a new line.

Code in C:

#include<stdio.h>
int main()
{
int i,j,r,count;                                   //declaring integer variables i,j for loops , r for number of rows
printf("Enter the number of rows/columns :\n");    //asking user for the number of rows;
scanf("%d",&r);                                    //taking number of rows and saving in variable r
count=3;                                           //intialising count =3
for(i=0;i<r;i++)                                   //loop for number of rows
   {
      for(j=0;j<=i;j++)                            //loop to print digit in every column of a row
         {
            printf("%d",count);                    //printing digit
         } 
      count++;                                     //incrementing count
      printf("\n");                                //printing newline
   }
}

TAKING INPUT:

DISPLAYING OUTPUT: