Write a recursive function that takes as a parameter a nonnegative integer and g

Question

Write a recursive function that takes as a parameter a nonnegative integer and generates the following pattern of stars. If the nonnegative integer is 4, then the pattern generated is: Also, write a program that prompts the user to enter the number of lines in the pattern and uses the recursive function to generate the pattern. For example, specifying 4 as the number of lines generates the above pattern. Write a recursive function to generate the following pattern of stars: Also, write a program that prompts the user to enter the number of lines in the pattern and uses the recursive function to generate the pattern. For example, specifying 4 as the number of lines generates the above pattern.

Explanation / Answer

1)

#include <iostream>

using namespace std;

int str(int);

int main()

{

    int n=4;

    str(n);

    return 0;

}

int str(int n)

{   int x;

    if(n==0)

    return -1;

    for(int i=0;i<n;i++)

        cout<<"*";

        cout<<endl;

        x= str(n-1);

    for(i=0;i<n;i++)

        cout<<"*";

      cout<<endl;

        return 0;

2)

2.

C program to print diamond using recursion

#include <stdio.h>

void print (int);

int main () {

   int rows;

   scanf("%d", &rows);

   print(rows);

   return 0;

}

void print (int r) {

   int c, space;

   static int stars = -1;

   if (r <= 0)

     return;

   space = r - 1;

   stars += 2;

   for (c = 0; c < space; c++)

      printf(" ");

   for (c = 0; c < stars; c++)

      printf("*");

   printf(" ");

   print(--r);

   space = r + 1;

   stars -= 2;

   for (c = 0; c < space; c++)

      printf(" ");

   for (c = 0; c < stars; c++)

      printf("*");

   printf(" ");

}

}

                              

#include <iostream>

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