Submission

Status:

PP------P-

Score: 30

User: Spongebob

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2024-10-16 19:59:25

#include <stdio.h>

int main () {
    int counter[26] = {}, i;
    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) {
           printf("%c", *(str+i));
           break;
        }
    }
}