Submission

Score: 100

User: winkawin2552

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2025-10-10 19:11:08

#include <stdio.h>

void sort(char word[]){
    for(int i =0; word[i] != '\0'; i++){
        int key = word[i];
        int j = i-1;
        while(j>=0 && word[j] > key){
            word[j+1] = word[j];
            j--;
        }word[j+1] = key;
    }
}

int main(){
    char word[25];
    int is_first = 0;
    scanf("%s0", word);
    sort(word);
    for(int i =0; word[i] != '\0'; i++){
        for(int j = 0; ; j++){
            if(i==j){;}else{
            if(!(is_first) &&  word[j] == '\0') {
                printf("%c", word[i]);
                goto end;
            }
            if(word[j] == word[i]){
                break;
            }}
        }
    }end:

    return 0;
}