#include <stdio.h>
 
void main()
{
    int a, b;
 
    // 正の整数を2つ入力させる
    while (1) {
        printf("１つ目の正の整数を入力してください：");
        scanf("%d", &a);
        if (a > 0) break;
        printf("正ではありません。\n");
    }
 
    while (1) {
        printf("２つ目の正の整数を入力してください：");
        scanf("%d", &b);
        if (b > 0) break;
        printf("正ではありません。\n");
    }
 
    // 最小公倍数を求める（a, b の倍数を探す）
    int low = a > b ? a : b;  // 大きい方からスタート
 
    while (1) {
        if (low % a == 0 && low % b == 0)
            break;
        low++;
    }
 
    printf("\n%dと%dの最小公倍数は %d です。\n", a, b, low);
}
 

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