#include
main()
{
int n, c, k, x = 1;
clrscr();
printf("Enter number of rows::");
scanf("%d", &n);
for ( c = 1 ; c <= n ; c++ )
{
for ( k = 1 ; k <= c ; k++ )
{
printf("%d", x);
x++;
}
x--;
for ( k = 1 ; k <= c - 1 ; k++ )
{
x--;
printf("%d", x);
}
printf("\n");
x = 1;
}
getch();
return 0;
}
--------------------------------
output:-
Enter number of rows::6
1
121
12321
1234321
123454321
12345654321
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