Solution of URI 1140 :: UVA 12243 :: LIVE ARCHIVE 4810 :: Flowers Flourish from France

Before seeing the solution make sure that you tried enough. Don’t paste the whole code, just find out the logic. If you stuck in trouble, just inform me on comment.

/**Bismillahir Rahmanir Rahim.**/

#include <stdio.h>
#include <string.h>
int main()
{
    char str[1500];
    while(1)
    {
        gets(str);
        if(str[0]=='*') break;
        else
        {
            int lnth, i,j,cndtn=1;
            char cse[2];
            lnth=strlen(str);
            if(str[0]>=65 && str[0]<=90)
                cse[0]=str[0]+32;
            else if(str[0]>=97 && str[0]<=122)
                cse[0]=str[0]-32;
            for(i=1; i<lnth; i++)
            {
                if(str[i]==' ')
                {
                    if(str[i+1]==str[0] || str[i+1]==cse[0])
                        continue;
                    else{
                        cndtn=0;
                        break;
                    }
                }
            }
            if(cndtn==1) printf("Y\n");
            else printf("N\n");
        }
    }
    return 0;
}