C++动态数组

#include <iostream>
using namespace std;

int main()
{
	int t, i = 0, j = 0;
	cin >> t;
	char *pc = nullptr;//初始化
	int *pi = nullptr;//初始化
	float *pf = nullptr;//初始化
	int sum=0;
	int FLAG = 0;
	while (FLAG < t)
	{
		char ch;
		cin >> ch;
		int n;
		i = 0, j = 0;
		if (ch == 'I')
		{
			cin >> n;
			sum = 0;
			pi = new int[n]; // 动态分配内存
			for (i = 0; i < n; i++)
			{
				cin >> *(pi + i);
				sum += *(pi + i);
			}
			cout << sum / n << endl;
			delete[] pi; // 释放内存
			pi = nullptr; // 设置为 nullptr
		}
		else if (ch == 'C')
		{
			cin >> n;
			char *chArray = new char[n]; // 动态分配内存
			char max = chArray[0];
			pc = chArray;
			for (int z = 0; z < n; z++)
			{
				cin >> *(pc + z);
			}
			for (int Z = 0; Z < n; Z++)
			{
				if (*(pc + Z) > max)
				{
					max = *(pc + Z);
				}
			}
			cout << max << endl;
			delete[] chArray; // 释放内存
			pc = nullptr; // 设置为 nullptr
		}
		else if (ch == 'F')
		{
			cin >> n;
			pf = new float[n]; // 动态分配内存

			for (int j = 0; j < n; j++)
			{
				cin >> *(pf + j);
			}
			float min = *(pf + 0);
			for (int I = 0; I < n; I++)
			{
				if (*(pf + I) < min)
				{
					min = *(pf + I);
				}
			}
			cout << min << endl;
			delete[] pf; // 释放内存
			pf = nullptr; // 设置为 nullptr
		}
		FLAG++;
	}
	return 0;
}

【1】动态内存-->待更......