#include <stdio.h>
 
int main(void)
{
	int x, y;
 
	printf("ｘとｙを入力して。（ｙがｘより大きくなるように）\n");
	printf("自然数ｘ：\n");
	scanf("%d", &x);
	printf("自然数ｙ：\n");
	scanf("%d", &y);
 
	if (x > y)
		do {
			printf("ｙがｘより大きくなるように入力して！\n");
			printf("整数ｙ：\n");
			scanf("%d", &y);
		} while (x > y);
 
	for (int i = x; i <= y; i++) {
		for (int j = x; j <= y; j++)
			printf("%3d", i * j);
		putchar('\n');
	}
	return 0;
}
 

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Mwo4

3
8