【c++】c++格式控制輸出簡單應用

// c++格式控制輸出簡單應用

// 九九乘法表對齊
#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
	for (int i = 1; i < 10; i++)
	{
		for (int j = 1; j <= i; j++)
		{
			//cout << i << "*" << j << "=" << i*j<<'\t';
			cout << setw(2) << i << "*" << j << "=" << i*j;
		}
		cout << endl;
	}
	return 0;
}

<img src="https://img-blog.csdn.net/20150515230049917?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhhb3lhcWlhbjU1Mg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

<pre name="code" class="cpp">#include <iostream>
#include <iomanip>
using namespace std;

int main()
{
	int ar[9][9];
	for (int i = 1; i <= 9; ++i)
	{
		for (int j = 1; j <= 9; ++j)
		{
			ar[i - 1][j - 1] = i*j;
		}
	}

	for (int i = 0; i<9; ++i)
	{
		for (int j = 0; j<9; ++j)
		{
			//cout << ar[i][j] << '\t';
			cout << setw(4) << ar[i][j];
		}
		cout << endl;
	}
	return 0;
}

<img src="https://img-blog.csdn.net/20150515230229086?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhhb3lhcWlhbjU1Mg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />