palindrome missing alphabet in c

String S which is a palindrome is passed as the input. But just one alphabet A is missing in S. The program must print the missing alphabet A.
Note: The FIRST alphabet of S will always be present.

Input Format:
The first line contains S.

Output Format:
The first line contains the missing alphabet A.

Example Input/Output 1:
Input:
malayaam

Output:
l

Solution:

int main()

{

char s[100];

scanf("%s",s);

int l=strlen(s)-1;

for(int i=0;i<strlen(s);i++){

    if(s[i]!=s[l]){

        printf("%c",s[i]);

        break;

    }

    else{

        l--;

    }

}

}