Submission

Status:

PPPPPPPPPP

Score: 100

User: Pera

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.001 second

Submitted On: 2024-10-16 19:59:42

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

int main(void) {
    char str[100];
    scanf("%s", str);

    int charfreq[26];
    for (int i = 0; i < 26; i++) charfreq[i] = 0;

    for (int i = 0, length = strlen(str); i < length; i++) {
        charfreq[str[i] - 'A']++;
    }

    for (int i = 0; i < 26; i++) {
        if (charfreq[i] == 1) {
            printf("%c\n", i + 'A');
            break;
        }
    }
    return 0;
}