triangle help

[sugarflaps]

Hi im needing a wee bit of help creating a series of triangles that get bigger each time the user has to input the number of triangles they want. I have managed to get my code to produce one triange but i cant get the loop to run for the number of triangles. Any help would be great thanks guys

#include <iostream> // using the main library
using namespace std;



// Function declarations

char this_char () ;
int get_num_row () ;
void draw_tri ( char this_char, int num_row ) ;

int main ()
{
	char this_char = '*' ;

	//Get number of rows.
    int num_row ;
    num_row = get_num_row () ;

	// Draw triangles
	draw_tri ( this_char, num_row ) ;

	return 0 ;

}


// Function to get number of rows.
 int get_num_row ()
{
	int num_row ;
	cout << " Please enter the number of rows you would like in your triangle. " << endl ;
	cin >> num_row ;

	return num_row ;

}

// Function to draw triangles.
void draw_tri (char this_char, int num_row ) 
{
	for ( int i = 1 ; i <= num_row ; i ++ )
	{                     // Nested loop.
		for ( int j = 1 ; j <= i ; j ++ )
		{
			cout << " * " ;
			
        }
		cout << endl << endl ;
		
	}
}

[amitpatel66]

Hi im needing a wee bit of help creating a series of triangles that get bigger each time the user has to input the number of triangles they want. I have managed to get my code to produce one triange but i cant get the loop to run for the number of triangles. Any help would be great thanks guys

#include <iostream> // using the main library
using namespace std;



// Function declarations

char this_char () ;
int get_num_row () ;
void draw_tri ( char this_char, int num_row ) ;

int main ()
{
	char this_char = '*' ;

	//Get number of rows.
    int num_row ;
    num_row = get_num_row () ;

	// Draw triangles
	draw_tri ( this_char, num_row ) ;

	return 0 ;

}


// Function to get number of rows.
 int get_num_row ()
{
	int num_row ;
	cout << " Please enter the number of rows you would like in your triangle. " << endl ;
	cin >> num_row ;

	return num_row ;

}

// Function to draw triangles.
void draw_tri (char this_char, int num_row ) 
{
	for ( int i = 1 ; i <= num_row ; i ++ )
	{                     // Nested loop.
		for ( int j = 1 ; j <= i ; j ++ )
		{
			cout << " * " ;
			
        }
		cout << endl << endl ;
		
	}
}

Hi,

get the input from the user the no of triangles he want to draw, then run a for loop using that value from 1...9( say user wants to draw 9 triangles) and with in the loop call draw_tri function one time each for every value of for loop. so the draw_tri function will be called 9 times here!!
Is that simple??

[sugarflaps]

Hi,

get the input from the user the no of triangles he want to draw, then run a for loop using that value from 1...9( say user wants to draw 9 triangles) and with in the loop call draw_tri function one time each for every value of for loop. so the draw_tri function will be called 9 times here!!
Is that simple??

Hi im not quite sure what you mean do i get rid of rows and just go with thenumber of triangles. thanks

[amitpatel66]

Hi im not quite sure what you mean do i get rid of rows and just go with thenumber of triangles. thanks

No. I mean you get two input values from the user:
1. No of rows required.
2. No of triangle

Call draw_tri functrion passing no of rows as input to that function as you are doing that much no of times as mentioned by user.

Eg:
sample code snippet:

[code=c]
cout<< "Enter no of rows required:";
cin>>b;
cout<< "Enter total no of triangles required:";
cin >> a;
for(int i=1;i<=a;i++)
{
draw_tri(b);
}
[/code]

Hope this helps!!

[sugarflaps]

hi is this what you mean i keep getting this error message error C2660: 'draw_tri' : function does not take 1 arguments
here i my ammended code

#include <iostream> // using the main library
using namespace std;



// Function declarations

char this_char () ;
int get_num_tri () ;
int get_num_row () ;
void draw_tri ( int num_tri, int num_row ) ;

int main ()
{

    // Get number of triangles
	int num_tri ;
	num_tri = get_num_tri () ;

	// Get number of rows
	int num_row ;
	num_row = get_num_row () ;

	// Draw triangles
	draw_tri ( num_tri, num_row ) ;

	return 0 ;

}

// Funtion to get user to input number of triangles and rows.
int get_num_tri ()
{
	int num_tri ;
	int num_row ;
	cout << " Please enter the number of triangles you would like " << endl ;
	cin >> num_tri ;
	cout << " Please enter the number of rows you would like " << endl ;
	cin >> num_row ;
	return num_tri ;
	return num_row ;
}



// Function to draw triangles.
void draw_tri ( int num_tri, int num_row ) 
{
	for ( int i = 1 ; i <= num_tri ; i ++ )
	{
	 draw_tri (num_row) ;
    for (int j = 1 ; j <= num_row ; j ++ )   
		{
			cout << " * " ;
			
        }
		cout << endl << endl ;
	}
		
	
}

[amitpatel66]

Hi im needing a wee bit of help creating a series of triangles that get bigger each time the user has to input the number of triangles they want. I have managed to get my code to produce one triange but i cant get the loop to run for the number of triangles. Any help would be great thanks guys

#include <iostream> // using the main library
using namespace std;



// Function declarations

char this_char () ;
int get_num_row () ;
void draw_tri ( char this_char, int num_row ) ;

int main ()
{
	char this_char = '*' ;

	//Get number of rows.
    int num_row ;
    num_row = get_num_row () ;

	// Draw triangles
	draw_tri ( this_char, num_row ) ;

	return 0 ;

}


// Function to get number of rows.
 int get_num_row ()
{
	int num_row ;
	cout << " Please enter the number of rows you would like in your triangle. " << endl ;
	cin >> num_row ;

	return num_row ;

}

// Function to draw triangles.
void draw_tri (char this_char, int num_row ) 
{
	for ( int i = 1 ; i <= num_row ; i ++ )
	{                     // Nested loop.
		for ( int j = 1 ; j <= i ; j ++ )
		{
			cout << " * " ;
			
        }
		cout << endl << endl ;
		
	}
}

DO NOT modify the code that you have written for generating one triangle.Just modify the MAIN function. I have made the changes as shown below. USe this main function for your program:

[code=c]
int main ()
{
char this_char = '*' ;
int no_of_tri = 1;

//Get number of rows.
int num_row ;
num_row = get_num_row () ;

//Get no of triangles required
cout<< "Enter no of triangles required:";
cin >> no_of_tri;

// Draw triangles
for(int i=1;i<=no_of_tr i;i++)
{
draw_tri ( this_char, num_row ) ;
}

return 0 ;
}
[/code]