Question

given an integer n the number of rows in a * triangle, write a program to get the triangle with n rows. in Python or c​

Answer 1

Answer:

# Function to demonstrate printing pattern triangle

def triangle(n):

     

   # number of spaces

   k = 2*n - 2

 

   # outer loop to handle number of rows

   for i in range(0, n):

     

       # inner loop to handle number spaces

       # values changing acc. to requirement

       for j in range(0, k):

           print(end=" ")

     

       # decrementing k after each loop

       k = k - 1

     

       # inner loop to handle number of columns

       # values changing acc. to outer loop

       for j in range(0, i+1):

         

           # printing stars

           print("* ", end="")

     

       # ending line after each row

       print("\r")

 

# Driver Code

n = 5

triangle(n)

Explanation:

Self Explainatory.

Answer 2

Answer:

#include<stdio.h>

int main()

{

 int i, j ,n;

printf("enter no.of rows n");

scanf("%d",&n);

//making a loop for making a triangle.

for (i=1;i<=n;i++)

{

for (j=0;j<=i;j++)

{

printf("*");

}

printf("\n");

}

}

Explanation:

In the code we had made two loops in a nested form where the i loop increases the row after each iterations and the j loop prints "*" i times to make the triangle.

The i,j,n  variables are initiated as integer.

The scanf function takes input for the user and store it in the memory corresponding to integer n.

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