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C言語で指定された添字の整数を出力する方法

Posted at

注意!

・ネタバレあり。

学んだこと

・二重ループのiとjの使い方
・添字は0から始まる。

ACしたコード

#include <stdio.h>
int	main(void)
{
	int	r,c;

	scanf("%d%d",&r,&c);
	// printf("%d %d\n",r,c);
	int a[2][2];
	// iは縦に使う
	for (int i = 0; i < 2; i++)
	{
		// jは横に使う
		for (int j = 0; j < 2; j++)
		{
			scanf("%d",&a[i][j]);
			// 標準入力から受け取れているか確認
			//printf("%d ",a[i][j]);
		}
		//printf("\n");
	}
	// 添字は0から始まるので問題文のrとcをそのまま指定するとズレるから-1する必要がある。
	printf("%d\n", a[r - 1][c - 1]);
	return (0);
}
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