版权声明:小简原创 https://blog.csdn.net/qq_43469554/article/details/87614632
这次我们输出一个稍微复杂的三角形,输入一个大写字母(A-Z)或者一个数字(1-9)
比如输入是F的时候,输出:
A
ABA
ABCBA
ABCDCBA
ABCDEDCBA
ABCDEFEDCBA
输入3时,输出:
1
121
12321
#include <iostream>
using namespace std;
int main()
{
char c;
cin >> c;
if (c >= 'A' && c <= 'Z')
{
for (int i = 1; i <= c - 'A' + 1; i++)
{
for (int j = 1; j <= c - 'A' + 1 - i; j++)
{
cout << " ";
}
for (int j = 1; j <= i; j++)
{
cout << (char)('A' + j - 1);
}
for (int j = i - 1; j >= 1; j--)
{
cout << (char)('A' + j - 1);
}
cout << endl;
}
}
else
{
for (int i = 1; i <= c - '1' + 1; i++)
{
for (int j = 1; j <= c - '1' + 1 - i; j++)
{
cout << " ";
}
for (int j = 1; j <= i; j++)
{
cout << (char)('1' + j - 1);
}
for (int j = i - 1; j >= 1; j--)
{
cout << (char)('1' + j - 1);
}
cout << endl;
}
}
return 0;
}