1 第一题

#include<iostream>
using namespace std;
int main()
{
    int t[256];
    string s;
    int i;
    cin >> s;
    for (i = 0; i < 256; i++)
        t[i] = 0;
    for (i = 0; i < s.length(); i++)
        t[s[i]]++;
    for (i = 0; i < s.length(); i++)
        if (t[s[i]] == 1)
        {
            cout << s[i] << endl;
            return 0;
        }
    cout << "no" << endl;
    return 0;
}

运行程序的时候，输入的是：xyzxyw

程序输出内容为:{{ input(1) }}

2 第二题

#include <iostream>
using namespace std;
int main()
{
    int max, min, sum, count = 0;
    int tmp;
    cin >> tmp;
    if (tmp == 0)
        return 0;
    max = min = sum = tmp;
    count++;
    while (tmp != 0)
    {
        cin >> tmp;
        if (tmp != 0)
        {
            sum += tmp;
            count++;
            if (tmp > max)
                max = tmp;
            if (tmp < min)
                min = tmp;
        }
    }
    cout << max << "," << min << "," << sum / count << endl;
    return 0;
}

运行程序的时候，输入的是： 1 2 3 4 5 6 0 7

程序输出内容为: {{ input(2) }}

3 第三题

#include <iostream>
using namespace std;

int main()
{
	int i = 100, x = 0, y = 0;
	while (i > 0)
	{
		i--;
		x = i % 8;
		if (x == 1)
			y++;
	}
	cout << y << endl;
	return 0;
}

程序输出内容为: {{ input(3) }}

4. 第四题

#include <iostream>
using namespace std;

int main(){
	int a[6] = {1, 2, 3, 4, 5, 6};
	int pi = 0;
	int pj = 5;
	int t, i;
	while (pi < pj)
	{
		t = a[pi];
		a[pi] = a[pj];
		a[pj] = t;
		pi++;
		pj--;
	}
	for (i = 0; i < 6; i++)
		cout << a[i] << ",";
	cout << endl;
	return 0;
}

程序输出内容为: {{ input(4) }}

5. 第五题

#include <iostream>
using namespace std;
int main()
{
	int i, length1, length2;
	string s1, s2;
	s1 = "I have a dream.";
	s2 = "I Have A Dream.";
	length1 = s1.size();
	length2 = s2.size();
	for (i = 0; i < length1; i++)
		if (s1[i] >= 'a' && s1[i] <= 'z')
			s1[i] -= 'a' - 'A';
	for (i = 0; i < length2; i++)
		if (s2[i] >= 'a' && s2[i] <= 'z')
			s2[i] -= 'a' - 'A';
	if (s1 == s2)
		cout << "=" << endl;
	else if (s1 > s2)
		cout << ">" << endl;
	else
		cout << "<" << endl;
	return 0;
}

程序输出内容为: {{ input(5) }}