Question

Having trouble coding this for C++. Please add comments for better understanding!

Write a program that draws two triangles by using a character 'X' as examples below. The program must prompts a user for an integer larger than 2. The user input will then be used to set the size of the output. If a user input an even value, the program will increase it by one before drawing the box. Example 1: Input: 3 Output: XXX XXX XX XX х х Example 2: Input: 4 Output: XXXXX XXXXX XXXX ХХХХ xxx XX XX X х Example 3 Input: 1 Please try again! Input: 2 Please try again! Input: 7 Output: XXXXXXXXXXXXXX XXXXXX XXXXXX XXXXX ХХХХХ XXXX XXXX XXX XXX xx XX X х

Answer 1

I WROTE THE CODE ALONG WITH COMMENTS.

CODE:

#include <iostream>

using namespace std;

int main()
{
int n,i,j,k,l=1;
cout<<"Input: ";
cin>>n;https://www.onlinegdb.com/online_c++_compiler#tab-stdin
while(3) //for loop used to repeat if n is 1 or 2.
{

if(n>2) //n is greather then 2 enter into if condition.
{
if(n%2==0) //check n is even or not. if even enter into if condition.
{
  
n=n+1; //n is incremented by one.
  
for(i=n;i>0;i--) //for loop used to printe x's on different lines.
{
for(j=i;j>0;j--) //for loop used to print x's on left side.
{
cout<<"x";
}
for(k=1;k<=l;k++) //for loop used to print spaces between them.
cout<<" ";
for(j=i;j>0;j--) //for loop used to print x's on right side.
{
cout<<"x";
}
cout<<endl; //next line.
l++; //increment i value.
}
}
else
{
  
for(i=n;i>0;i--) //for loop used to printe x's on different lines.
{
for(j=i;j>0;j--) //for loop used to print x's on left side.
{
cout<<"x";
}
for(k=1;k<=l;k++) //for loop used to print spaces between them.
cout<<" ";
for(j=i;j>0;j--) ////for loop used to print x's on right side.
{
cout<<"x";
}
cout<<endl; //next line.
l++; //increment i value.
}
}
break;
}
else
{
cout<<"Please try again!"<<endl; //if n is 1 or 2 enter into else loop.
cout<<"Input: ";
cin>>n;
}
  
}

return 0;
}

OUTPUT:

Input: 3 xxx XX ... Program finished with exit code 0 Press ENTER to exit console. I

Input: 4 XXXXX XXXX XXXX xxx xx х Program finished with exit code 0 Press ENTER to exit console.

Input: 1 Please try again! Input: 2 Please try again! Input: 7 XXX xxx xxx xx X ...Program finished with exit code 0 Press ENTER to exit console. I

SCREENSHOT OF THE CODE:

main.cpp 1 #include <iostream> 2 3 using namespace std; 4 5 int main() 6 { int n,i,j,k,1=1; cout<<"Input: "; cin>>n;https://www.onlinegdb.com/online_C++_compiler#tab-stdin 10 while(3) //for Loop used to repeat if n is 1 or 2. 11 - { 12 13 if(n>2) //n is greather then 2 enter into if condition. 14 { if(n%2==0) //check n is even or not. if even enter into if condition. 16 { 17 18 n=n+1; //n is incremented by one. 19 20 for(i=n;i>0;i--) //for Loop used to printe x's on different lines. 21 { 22 for(j=i;j>0;j--) //for Loop used to print x's on left side. 23 { 24 cout<<"x"; 25 }

for(k=1;k<=1;k++) //for Loop used to print spaces between them. cout<<" "; for(j=i;j>0;j--) //for Loop used to print x's on right side. { cout<<"x"; } cout<<endl; //next line. 1++; //increment i value. } } else { 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 for(i=n;i>0;i--) //for Loop used to printe x's on different lines. { for(j=i;j;j--) //for Loop used to print x's on Left side. { cout<<"x"; } for(k=1;k<=1;k++) {/for Loop used to print spaces between them. cout<<" "; for(j=i;j>0;j--) III/for Loop used to print x's on right side. { cout<<"x"; }

cout<<endl; //next line. 1++; //increment i value. } } break; } 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 } 68 else { cout<<"Please try again!"<<endl; cout<<"Input: "; cin>>n; //if n is 1 or 2 enter into else Loop. } } return ; 69