Submission

Score: 80

User: I_am_me

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2025-09-24 21:58:52

#include <stdio.h>
#include <string.h>
int main()
{
    char word[20] ;
    scanf("%s",&word) ;
    int size = strlen(word) ;
    for(int i = 0;i<size;i++) {
       int j = i;
       while(j-1>=0 && word[j]<word[j-1]) {
           char swp = word[j] ;
           word[j] = word[j-1] ;
           word[j-1] = swp;
           j--;
       }
    }
    
    int m =0;
    for(int k = 0;k<size-1;k++) {
        if(word[k]!=word[k+1] && word[k+1]!=word[k+2]) {
            m = k;
            break;
        }
    }
    if(m==0) printf("%c",word[m]) ;
    else if (m>0) printf("%c",word[m+1]) ;
}