#include <stdio.h>
int main() {
int number;
printf("1, 2, 3 のいずれかの数字を入力してください: ");
if (number == 1) {
} else if (number == 2) {
} else if (number == 3) {
} else {
printf("エラー\n"); // 1, 2, 3 以外の数値の場合 }
return 0;
}
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