Submission

Score: 100

User: kimza

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2025-10-12 22:56:41

#include <stdio.h>

int main() {
    char str[100];
    scanf("%s",str);
    int count = 0;
    char temp;
    char str2[100];
    int index = 0;
    for(int i=0;str[i]!='\0';i++){
        count++;
    }
    for(int i=0;i<count;i++){
        for(int j=i;j<count;j++){
            if(str[i]>str[j]){
                temp = str[i];
                str[i] = str[j];
                str[j] = temp;
            }
        }
    }

    
    for(int i=0;i<count;i++){
        if(str[i]!=str[i+1] && str[i]!=str[i-1]){
            str2[index] = str[i];
            index++;
        }
    }
    printf("%c",str2[0]);

    return 0;
}