drawing a triangle

[award982]

Hey! I'm trying to make a program that would draw a triangle. Heres what i got allready:

int chars;
cout<<"Enter a number: ";
cin>>chars;

int i,spcnum = chars;
for(i = 0;i != chars; i++,spcnum = spcnum--){
       string currentobj(i, '*');
       
       
       string spc(spcnum, ' ');
       cout<<spc<<currentobj<<endl;
       
       } 

If the user types 5, it draws this:

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

It should draw this:

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

Any ideas?

[Bazzy]

You need an other variable to keep the number of stars, initialize it with one and increment it by two each iteration

[award982]

i did it,now it draws

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

[Bazzy]

Add the spaces before the stars

[award982]

i know i meant it draws this:

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

[Bazzy]

What is your code now?

[award982]

cout<<"Enter a number: ";
cin>>chars;
chars++;
int i,spcnum = chars;
for(i = 1;i != chars; i++,spcnum = chars - i){
       string currentobj(i, '*');
       
       
       string spc(spcnum, ' ');
       cout<<spc<<currentobj<<endl;
       
       } 

now draws even weirder bull$H17, wth?

[Bazzy]

Your loop should look like this:

for(int i = 0,spcnum = chars, stars=1; i < chars; i++,spcnum--, stars+=2){
       string currentobj(stars, '*');

       string spc(spcnum, ' ');
       cout<<spc<<currentobj<<endl;

       }

[award982]

So the problem was not in the spaces but in the counter witch counts the stars.

Weird :(]

Well, thanks bazzy, you helped me once again lol :D

EDIT: what does += does?

[Bazzy]

x += y is the same as x = x + y

[award982]

now it get it, ty

OFFTOPIC: what is the function to generate a random number or a random letter?

something like:

int a = random(100);

so it would generate a random number between 0 and 100

[Bazzy]

rand()%101 To get "more random" numbers, call srand(time(0)) at the beginning of your program:
http://www.cplusplus.com/reference/clibrary/cstdlib/rand/