Submission

PPPPPPPPPP

Score: 100

User: Cmoss9

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.002 second

Submitted On: 2024-10-16 21:32:41

#include <stdio.h>

int stringlength (char arr[]) {
    int index = 0;
    while (arr[index] != '\0') {
        index++;
    }
    return index;
}

int main () {
    char arr[21];
    scanf("%s",arr);
    int length = stringlength(arr);
    int rizz = 0;
    char vibepass[21];
    int index = 0;
    for (int i = 0;i<length;i++) {
        rizz = 0;
        for (int j = i+1;j<length;j++) {
            if (arr[i] == arr[j]) {
                rizz++;
            }
        }
        for (int j = i-1;j>=0;j--) {
            if (arr[i] == arr[j]) {
                rizz++;
            }
        }
        if (!rizz) {
            vibepass[index] = arr[i];
            //printf("%c ",vibepass[index]);
            index++;
        }
    }
    //printf("\n");
    char honourone = vibepass[0];
    for (int i = 0;i<index;i++) {
        if (vibepass[i] < honourone) {
            honourone = vibepass[i];
        }
    }
    printf("%c",honourone);
}