[Bài tập C++] Viết hình in ra tam giác có quy luật

[cacodemon1812]

Viết trương trình in ra một tam giác có hình như sau

1
2 3 2
3 4 5 4 3
4 5 6 7 6 5 4
5 6 7 8 9 8 7 6 5
6 7 8 9 0 1 0 9 8 7 6
7 8 9 0 1 2 3 2 1 0 9 8 7
8 9 0 1 2 3 4 5 4 3 2 1 0 9 8
9 0 1 2 3 4 5 6 7 6 5 4 3 2 1 0 9
0 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1 0​

[COLOR=#880000]#include[/COLOR][COLOR=#008800]<stdio.h>[/COLOR]

[COLOR=#880000]#include[/COLOR] [COLOR=#008800]<conio.h>[/COLOR] 
[COLOR=#000088]int[/COLOR] main [COLOR=#666600]()[/COLOR] 
[COLOR=#666600]{[/COLOR] 
        [COLOR=#000088]int[/COLOR] i[COLOR=#666600],[/COLOR] j[COLOR=#666600];[/COLOR]
        [COLOR=#000088]int[/COLOR] n[COLOR=#666600];[/COLOR]  
        [COLOR=#000088]for[/COLOR][COLOR=#666600]([/COLOR]i[COLOR=#666600]=[/COLOR][COLOR=#006666]1[/COLOR][COLOR=#666600];[/COLOR] i[COLOR=#666600]<[/COLOR][COLOR=#006666]11[/COLOR][COLOR=#666600];[/COLOR] i[COLOR=#666600]++)[/COLOR]
        [COLOR=#666600]{[/COLOR]        n[COLOR=#666600]=[/COLOR][COLOR=#006666]2[/COLOR][COLOR=#666600]*[/COLOR]i[COLOR=#666600]-[/COLOR][COLOR=#006666]1[/COLOR][COLOR=#666600];[/COLOR]
                [COLOR=#000088]for[/COLOR][COLOR=#666600]([/COLOR]j[COLOR=#666600]=[/COLOR][COLOR=#006666]1[/COLOR][COLOR=#666600];[/COLOR]j[COLOR=#666600]<[/COLOR][COLOR=#006666]20[/COLOR][COLOR=#666600];[/COLOR]j[COLOR=#666600]++)[/COLOR]
                [COLOR=#666600]{[/COLOR]               
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]j[COLOR=#666600]<=[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600])[/COLOR]
                        [COLOR=#666600]{[/COLOR]       n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]+[/COLOR][COLOR=#006666]1[/COLOR][COLOR=#666600];[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]n[COLOR=#666600]>=[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600])[/COLOR] n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]%[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600];[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]n[COLOR=#666600]<[/COLOR][COLOR=#006666]0[/COLOR][COLOR=#666600])[/COLOR] n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]+[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600];[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]j[COLOR=#666600]<=[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600]-[/COLOR]i[COLOR=#666600])[/COLOR]
                        printf[COLOR=#666600]([/COLOR][COLOR=#008800]"   "[/COLOR][COLOR=#666600]);[/COLOR]
                        [COLOR=#000088]else[/COLOR]
                        printf[COLOR=#666600]([/COLOR][COLOR=#008800]" %d "[/COLOR][COLOR=#666600],[/COLOR]n[COLOR=#666600]);[/COLOR]
                        
                        [COLOR=#666600]}[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]j[COLOR=#666600]>[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600])[/COLOR]
                        [COLOR=#666600]{[/COLOR]
                                n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]-[/COLOR][COLOR=#006666]1[/COLOR][COLOR=#666600];[/COLOR]  
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]n[COLOR=#666600]>=[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600])[/COLOR] n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]%[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600];[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]n[COLOR=#666600]<[/COLOR][COLOR=#006666]0[/COLOR][COLOR=#666600])[/COLOR] n[COLOR=#666600]=[/COLOR]n[COLOR=#666600]+[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600];[/COLOR]
                        [COLOR=#000088]if[/COLOR][COLOR=#666600]([/COLOR]i[COLOR=#666600]<=[/COLOR]j[COLOR=#666600]-[/COLOR][COLOR=#006666]10[/COLOR][COLOR=#666600])[/COLOR]
                        printf[COLOR=#666600]([/COLOR][COLOR=#008800]"   "[/COLOR][COLOR=#666600]);[/COLOR]
                        [COLOR=#000088]else[/COLOR]
                        printf[COLOR=#666600]([/COLOR][COLOR=#008800]" %d "[/COLOR][COLOR=#666600],[/COLOR]n[COLOR=#666600]);[/COLOR]
                
                        [COLOR=#666600]}[/COLOR]
                [COLOR=#666600]}[/COLOR]
        printf[COLOR=#666600]([/COLOR][COLOR=#008800]"\n"[/COLOR][COLOR=#666600]);[/COLOR]
                
        
        [COLOR=#666600]}[/COLOR]
[COLOR=#666600]}[/COLOR]