C/C++分别打印符号菱形、字母菱形

1、打印符号菱形

int main()
{
	int i, j, k;
	for (i = 1; i <= 11; i++) {
		for (j = 1; j <= 11-i; j++)
			cout << " ";
		for (k = 1; k <= 2 * i - 1; k++)
			cout << "%";
		cout << endl;  
    //注意换行包含在for循环内部，
    //每执行完一次整个循环（三个for）打印完一行
    //会写前面部分后面同样的思路
	}
	for (i = 1; i <= 10; i++) {
		for (j = 1; j <= i; j++)
			cout << " ";
		for (k = 1; k <= 21-2 * i; k++)
			cout << "%";
		cout << endl;
	}
	return 0;

}

2、打印字母菱形（Z后接A）并且用户输入总行数（奇数）

打印部分只需要将打印“%”换成如下代码即可

cout << c;
 c++;
if (c > 'Z')
c = 'A';

完整代码

int main() {

	int i, j, k,n;
	char c = 'A';
	cout << "请输入行数（奇数）： ";
	cin >> n;
	for (i = 1; i <= n/2+1; i++) {
		for (j = 1; j <= n /2+1- i; j++)
			cout << " ";
		for (k = 1; k <= 2 * i - 1; k++) {
			cout << c;
			c++;
			if (c > 'Z')
				c = 'A';
		}
		cout << endl;
	}
	for (i = 1; i <= n/2; i++) {
		for (j = 1; j <= i; j++)
			cout << " ";
		for (k = 1; k <= n-2 * i; k++) {
			cout << c;
			c++;
			if (c > 'Z')
				c = 'A';
		}
		cout << endl;
	}
	return 0;
}