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#include <stdio.h>
int main()
{
int i,space,rows,k=0,count=0,count1=0;
printf("Enter the number of rows: ");
scanf("%d",&rows);
for(i=1;i<=rows;++i)
{
for(space=1;space<=rows-i;++space)
{
printf(" ");
++count;
}
while(k!=2*i-1)
{
if (count<=rows-1)
{
printf("%d ",(i+k));
++count;
}
else
{
++count1;
printf("%d ", (i+k-2*count1));
}
++k;
}
count1=count=k=0;
printf("\n");
}
return 0;
}
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