Thread: For loop to make patterns

Perhaps post what your program does rather than post the output of a different program?
As it is it's rather confusing.

Code:

for (row=1;row<=h;row++)
	{
		for (col=1;col<=h;col++)
		{
			
			if(col<=row)
			{
				printf (" ");
			}
			else
			{
				printf ("*");
			}
		}
		printf ("\n");
	}

That is what I have come up with to make the first pattern, but it is missing one line.

OK, I am needing to create the program I attached. So far I have

Code:

#include <stdio.h>


int main()
{
	//variable declarations
	int h, w;
	int row, col;

	//getting the height and a validation loop
	printf("Enter the height [between 4 and 13(inclusive): ");
	scanf("%d",&h);
	while(h<4|| h>13)
	{
		printf("Error: The height should be between 4 and 13(inclusive) \n");
		printf("Re-Enter the height: ");
		scanf("%d",&h);
	}


	//getting the width and a validation loop
	printf("Enter the width [between 3 and 10(inclusive): ");
	scanf("%d",&w);
	while(w<3 || w>10)
	{
		printf("Error: The width should be between 3 and 10(inclusive) ");
		printf("Re-Enter the width: ");
		scanf("%d",&w);
	}

	
	for (row=1;row<=h;row++)
	{
		for (col=1;col<=h;col++)
		{
			
			if(col<=row)
			{
				printf (" ");
			}
			else
			{
				printf ("*");
			}
		}
		printf ("\n");
	}

	

	
	//Exit program
	return 0;
}

What I have attached are the patterns that I need to make by using for loops. I have attached the code I have, the assignment, and my professor's example.

Well what you posted won't work because you start of with row and col equal to the same number, 0. So when you reach this condition

Code:

if (col<=row)
{
    printf(" ");
}

col is always less than or equal to row in this nested loop, so a leading space is always printed, at least once. Instead you should notice something about the actual pattern,

Code:

****** 
 ***** 
  ****
   ***
    **
     *

The actual loops must be a little different than what you have. Each line is the same amount of characters but the number of spaces is equal to the line number you are on - 1. So use that to your advantage. Don't be afraid to change or make a copy of the user's input variable to figure out what you are doing.

esbo, clearly you have forgotten how for loops work. The inner for will complete before the outer for will increment row. Then the inner loop starts anew. So the number of times the outer loop executes controls the number of times the inner loop executes. The comments in your post are not true.

Originally Posted by whiteflags

esbo, clearly you have forgotten how for loops work. The inner for will complete before the outer for will increment row. Then the inner loop starts anew. So the number of times the outer loop executes controls the number of times the inner loop executes. The comments in your post are not true.

Maybe I have, I then to avoid using for loops and just use while loops with breaks in them
to exit the loop, I find that works best for me as I do not have to try and remember how other people code works.

When you get a tricky bug you tend to begin to doubt everything - lol.

The box may be easy but that is the one I need help with now, I have completed the first pattern.

Originally Posted by snayyer

This Is A Challenge !

No, it's a thread hijack. Don't do that...

can someone please help me make the box pattern?