Submission

Score: 100

User: mrblbb

Problemset: ตัวอักษรตัวแรกในคำ

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-13 20:47:29

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

int main(){
    char str[30];
    scanf("%s", str);
    for (int i=0; i<strlen(str)-1; i++){
        for (int j=0; j<strlen(str)-i-1; j++){
            if (str[j] > str[j+1]){
                char temp = str[j];
                str[j] = str[j+1];
                str[j+1] = temp;
            }
        }
    }
    for (int i=0; i<strlen(str); i++){
        if (str[i]==str[i+1] || str[i] == str[i-1]){
            continue;
        } else{
            printf("%c", str[i]);
            return 0;
        }
    }
}