String Triangle Pattem

The program must accept a string $ as the input. The program must print the desired pattern as shown in the Example Input/Output section. Note: The length of S is always odd.

Boundary Condition(s):
5 <= Length of S <= 99

Input Format:
The first line contains S.

Output Format:
The lines containing the desired pattern as shown in the Example Inpût/Output section

Example Input/Output 1:
Input
12345
Output
**1**
*2*2*
34543

Example Input/Output 2:
Input
abcdefg
Output
***a***
**b*b**
*c***c*
defgfed

Example Input/Output 3:
Input:
skillrack
Output:
****s****
***k*k***
**i***i**
*l*****l*
lrackcarl

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
char a[100];
scanf("%s",a);
int l=strlen(a);
int m=(l/2);
int h=0,w=0;
for(int i=0;i<m;i++)
{
for(int j=0;j<m-i;j++)
printf("*");
printf("%c",a[h]);
for(int j=0;j<w;j++)
printf("*");
if(i!=m && i!=0)
printf("%c", a[h]);
for(int j=0;j<m-i;j++)
printf("*");
printf("n");
h+=1;
if(w==0)
w=1;
else if(w>-1)
w+=2;
}
w=m;
for(;m<strlen(a);m++)
printf("%c",a[m]);
m=w;
w+=m;
w--;
for(;w>=m;w--)
printf("%c",a[w]);
}