#include<stdio.h>
int main()
{
int i,j,k,l,n,val;
printf("no of lines=");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
printf("\n");
for(j=1;j<=n-i;j++)
{
printf(" ");
}
for(k=1;k<=i;k++)
{
printf("%d",k);}
for(l=i-1;l>=1;l--)
printf("%d",l);
}
return 0;
}
OUTPUT-
no of lines=6
1
121
12321
1234321
123454321
12345654321
int main()
{
int i,j,k,l,n,val;
printf("no of lines=");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
printf("\n");
for(j=1;j<=n-i;j++)
{
printf(" ");
}
for(k=1;k<=i;k++)
{
printf("%d",k);}
for(l=i-1;l>=1;l--)
printf("%d",l);
}
return 0;
}
OUTPUT-
no of lines=6
1
121
12321
1234321
123454321
12345654321
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