Answer Posted / arun c s

#include <stdio.h>
main()
{
int i, j, k, space, n=9;

for (i=1; i<=n; i++)
{
for (j=1; j<=n-i; j++)
putchar(' ');
for (j=1,k=2*i-1; j<=2*i-1; j++,k--)
{
if (j <= k)
printf("%d", j);
else
printf("%d", k);
}
putchar('
');
}

getch();
}

FILE *fp1,*fp2; fp1=fopen("one","w") fp2=fopen("one","w") fputc('A',fp1) fputc('B',fp2) fclose(fp1) fclose(fp2)} a.error b. c. d.

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