Submission

Status:

PPPPPPPPPP

Subtask/Task Score:

100/100

Score: 100

User: wasupum

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.001 second

Submitted On: 2025-10-05 14:30:56

#include <stdio.h>

int main(void){
    int abc[30]={0};
    
    int ch;
    while((ch = getchar()) != '\n' && ch != EOF){
        int cha = ch - 'A';
        abc[cha]++;
    }
    
    for(int i = 0 ; i < 26 ; i++){
        if(abc[i] == 1){
            printf("%c\n",i + 'A');
            break;
        }
    }
    return 0;
}