C/C++ 课题解答（1）

随机产生100个字符（a~z)数组arrayOfChar，输入字符c，计算字符c在数组中出现的次数和位置。

#include <iostream>
using namespace std;
#include <time.h>
int main()
{
	char arrayOfChar[100];
	int randChar;
	srand(time(NULL));
	for (int i = 0; i < 100; i++)
	{
		randChar = rand() % 26;
		arrayOfChar[i] = 'a' + randChar;
	}
	for (int i = 0; i < 10; i++)
	{
		for (int j = 0; j < 10; j++)
			cout << arrayOfChar[i*10 + j] << " ";
        cout << endl;
	}
	cout << endl;

	while (1)
	{
		cout << "请输入单个字符:";
		char enterChar;
		cin >> enterChar;
		int times = 0;
		int earliest_index = -1;
		int latest_index = -1;
		for (int i = 0; i < 100; i++)
		{
			if (enterChar == arrayOfChar[i])
			{
				times++;
				earliest_index = (-1 == earliest_index) ? i : earliest_index;
				latest_index = i;
			}
		}

		cout << "出现次数:" << times << endl;
		cout << "最早出现索引:" << earliest_index << endl;
		cout << "最后出现索引:" << latest_index << endl;
	}

	system("pause");
	return 1;
}