Assume the availability of a method named makeStars that can be passed a non-neg

Question

Assume the availability of a method  named  makeStars that can be passed a non-negative integer  n and that returns a String of n asterisks. Write a method  named printTriangle that receives a non-negative integer  n and prints a triangle of asterisks as follows: first a line of n asterisks, followed by a line of n-1 asterisks, and then a line of n-2 asterisks, and so on. For example, if the method received 5 it would print:
* * * * *
* * * *
* * *
* *
*

The method must not use a loop of any kind (for, while, do-while) to accomplish its job. The method should invoke makeStars to accomplish the task of printing a single line.

Explanation / Answer

#include <stdio.h>
void makeStars(int n){
    if(n <=1 )
        printf("*");
    else{
        printf("*");
        makeStars(n-1);
    }
}
void printTriangle(int n){
    if(n <=1 )
         printf("*");
    else {
        makeStars(n);
        printf(" ");
        printTriangle(n-1);
    }
}

int main(void) {
   printTriangle(5);
   return 0;
}

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