Pascal's Triangle in Turbo C

centro13 · #1 (**permalink**) 09-02-2008, 08:27 AM

Can someone please give the correct code for Pascal's Triangle in Turbo C that looks like a real triangle..thanks..

MrPickle · #2 (**permalink**) 09-02-2008, 08:29 AM

Please post your attempt at solving the problem first.

centro13 · #3 (**permalink**) 09-02-2008, 08:45 AM

Code:

#include<stdio.h>
#include<conio.h>
#define p printf
void main()

{
int b,m,c;

clrscr();

p("\nHow many lines do you want?: ");
scanf("%d",&b);

p("\n\n\n\n");

for (m=0;m<b;m++)
{
p("\t\t\t");
int t=1;
for (c=m;c>=0;c--)
{
p("%4d",t);
t=t*c/(m-c+1);
}
p("\n\n");
}
getch();
}

My name is BM..

MrPickle · #4 (**permalink**) 09-02-2008, 03:31 PM

Hello BM, what exactly is wrong with your code?
I tried it an it seems to work fine..

(Please use tags when posting code, thanks.)

centro13 · #5 (**permalink**) 09-02-2008, 09:11 PM

Yes it works fine but it looks like a half triangle like this..

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1

i want the pascal triangle to look like a whole triangle..thanks..

MrPickle · #6 (**permalink**) 09-03-2008, 09:18 AM

Okay, I see what you mean now.

What you need to do is indent the each row by the amount of rows left to print.

Here's how I would do it, I've added 1 more variable and a for loop.

Code:

#include<stdio.h>
#include<conio.h>
#define p printf
int main() {
    int b, m, c, IndentCount;

    p("How many lines do you want?: ");
    scanf("%d",&b);
    IndentCount = b;

    p("\n");

    for(m = 0; m < b; m++) {
        int t = 1;
        for(int i = 0; i < IndentCount; i++)
                p(" ");
        for (c = m; c >= 0; c--) {
            p("%d ", t);
            t = t*c / (m-c+1);
        }
        p("\n");
        IndentCount--;
    }
    getch();
    return 0;
}

This tends to go dodgy when a line has a number with 2 digits in it.

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