ex36

 

Write a program that allows you to enter an integer N and display the triangle of stars.  for example  N = 4

               *

             ***

           *****

       *******    

******** In Algorithm ********

Algorithm Variables i,j,N : integers Begin write("Enter an integer : ") read (N) for i from 0 to N-1 for j from 1 to (N*2)-1 if (j >= N-i and j <= N+i ) then write("*") else write(" ") next next write("\n") next End Result ==> Enter an integer : 4 * *** ***** *******

******** In C ********

#include<stdio.h> int main() { int i,j,N; printf("Enter an integer : "); scanf("%d",&N); for(i=0;i<N;i++){ for(j=1;j<=(N*2)-1;j++){ if (j>=N-i && j<= N+i ) printf("*"); else printf(" "); } printf("\n"); } return 0 ; }

******** In C++ ********

#include <iostream> using namespace std; int main() { int i,j,N; cout<<" Enter a integer : "; cin>>N; for(i=0;i<N;i++){ for(j=1;j<=(N*2)-1;j++){ if (j>=N-i && j<= N+i ) cout<<"*"; else cout<<" "; } cout<<"\n"; } return 0 ; }