Submission

Score: 100

User: evevevie

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2025-10-02 18:22:47

#include <stdio.h>
#include <string.h>
int main(){
    char input[20];
    char temp, output;
    int i, j, length;
    scanf("%s", &input);
    length=strlen(input);
//sort
    for(i=0;i<length-1;i++){
        for(j=0;j<length-1;j++){
            if(input[j]>input[j+1]){
                temp=input[j+1];
                input[j+1]=input[j];
                input[j]=temp;
            }
        }
    }
//dupe check
    for(i=0;i<length-1;i++){
        if(input[i]!=input[i+1]){
            output=input[i];
            printf("%c", output);
            return 0;
        } else {
            i++;
        }
    }
}