Submission

Status:

PPPPPPPPPP

Score: 100

User: Spongebob

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.001 second

Submitted On: 2024-10-16 20:08:41

#include <stdio.h>

int main () {
    int counter[26] = {}, i;
    char ans;
    int first = 1;
    char str[21];
    scanf("%20s", str);
    
    for (i = 0; *(str+i) != '\0'; i++) {
        counter[*(str+i) - 'A']++;
    }
    
    for (i = 0; *(str+i) != '\0'; i++) {
        if (counter[*(str+i) - 'A'] == 1 && (*(str+i) < ans || first)) {
           ans = *(str+i);
           first = 0;
        }
    }
    printf("%c", ans);
}