Assume the availability of a function named printStars that can be passed a non-negative integer n and print a line of asterisks. Write a function named printTriangle that receives a non-negative integer n and prints a triangle of asterisks as follows: first a line of 1 asterisk, followed by a line of 2 asterisks, and then a line of 3 asterisks, and so on and finally a line of n asterisks. For example, if the function received 5 it would print: * * * * * * * * * * * * * * * The function must not use a loop of any kind (for, while, do-while) to accomplish its job. The function should invoke printStars to accomplish the task of printing a single line.

LANGUAGE: C++

CHALLENGE:

Assume the availability of a function named printStars that can be passed a non-negative integer n and print a line of asterisks. Write a function named printTriangle that receives a non-negative integer n and prints a triangle of asterisks as follows: first a line of 1 asterisk, followed by a line of 2 asterisks, and then a line of 3 asterisks, and so on and finally a line of n asterisks. For example, if the function received 5 it would print: * * * * * * * * * * * * * * * The function must not use a loop of any kind (for, while, do-while) to accomplish its job. The function should invoke printStars to accomplish the task of printing a single line.

SOLUTION:

void printTriangle(int n){
   if(n <= 0) return;
   printStars(n);
   cout<<endl;
   printTriangle(n-1);
}