ZTE's written examination procedure questions

Text editors (15)

Requirements:

(1) Edit the text;

(2) Save and open the text file at the specified location;

(3) has the input and output interface.

Code: (This code is correct to run in vc6.0 and is not compiled in vs2010)

#include <fstream.h> #include <string.h> #include <iostream.h> #include <stdio.h> #include <
	stdlib.h> void input () {char str[100];
	Ofstream out ("D:\\test.txt");
		
	if (!out) {cout<< "Cannot open output file.\n";
	} cout<< "Please input:" <<endl;
	Gets (str);
	out<<str;
	cout<<endl;
	
Out.close ();
	void output () {Ifstream in ("D:\\test.txt");
		
	if (!in) {cout<< "Cannot open input file.\n";
	} char str;
	while (In.get (str)) {cout<<str;
	} cout<<endl;
In.close ();
    } void Main () {int j=1;
    Char i[10];	
	int n;
		do {cout<< "1. Write text" <<endl;
		cout<< "2. Read Text" <<endl;
		cout<< "3. Exit program" <<endl;
		cout<< "Please choose:";
		cin>>i; if ((i[0]<49) | |
		(i[0]>51)) {cout<< "Input error!!"
			<<endl;
		Goto end;
        else n=i[0]-48;
			Switch (n) {case 1:input ();
		Break
			Case 2:output ();
		Break
		Case 3:exit (0); Default:cout<< "Input Error!"
		<<endl;
	} end:;
}while (j==1); }

2

.

#include <iostream> #include <cstdio> using namespace std;
	struct TreeNode {char data;
	TreeNode *left;
TreeNode *right;

};
	void GetHeight (TreeNode *t, int &h) {if (T = = NULL) H = 0;
		else {int left_h;
		GetHeight (T->left, Left_h);
		int right_h;
		GetHeight (T->right, Right_h);
	H = 1 + max (Left_h, Right_h);
	} TreeNode *createbitree (TreeNode *&t) {//Enter the value of the node in the binary tree in order of precedence (one character), empty characters represents an empty tree,//construct the two-fork tree T represented by the two-fork list.
	Char ch;
	CIN >> ch;
	if (ch = = ' # ') T = NULL; else {if (!) (
		T = (TreeNode *) malloc (sizeof (TreeNode))) return 0;              T->data = ch;   Generating root node Createbitree (t->left);   Construction of left subtree Createbitree (t->right);
Construct right subtree} return T;

	}//Createbitree void free (TreeNode *&t) {if (T = = NULL) return;
	Free (t->left);
	T->left = NULL;
	Free (t->right);
	T->right = NULL;
	Free (T);
T = NULL;
	int main () {TreeNode *t = NULL;

	Createbitree (T);
	int height;
	GetHeight (T, height); cout <<
	Height << Endl;

	Free (T);
return 0; }

3. A number of points on the two-dimensional plane, to find a line that can travel through the most points

#include <iostream> using namespace std;
const double inf=2100000000;
struct point {int x,y;};
    int cmp (const void *a, const void *b) {if (* (double*) a> * (double *) b) return 1;
else return-1;
Point p[1001];
Double k[1001];
    int main () {int N;
    int I,j,l,counter,ans;                            
                                         while (scanf ("%d", &n)!=eof && N) {for (i=0;i<n;i++)
                         scanf ("%d%d", &p[i].x,&p[i].y); for (ans=0,i=0;i<n-1;i++) {for (j=i+1,l=0;j<n;j++,l + +) {if (P[i].x==p[j].
                                                           x) K[l]=inf;
                                                  Else             K[l]=double (P[I].Y-P[J].Y)/(p[i].x-p[j].x);
                                         } qsort (K,l,sizeof (k[0]), CMP);
                                                           for (j=0;j<l;j++) {
                                                           Counter=1;
                                                                       while (J+1<l && k[j]==k[j+1]) {
                                                                       j + +;
                                                           counter++;
                                                                          } if (Counter>ans)
                                         Ans=counter; } printf ("%d/n", ans+1);
return 0; }

Train of thought: to find out the slope of one of the points and the other points, and to sort, if the same slope is the same line.

#include <iostream>
using namespace std;

void FindStr (char* str)
{
    if (str = NULL) return
        ;
    
    char* pstr = str;
    char* qstr = str+1;
    char* index = str;
    char* maxindex = str;
    int num = 0;
    int maxnum = 0;

    while (*pstr!= ' ")
    {while
        (*qstr!= *pstr) {
            num = 0;
            qstr++;
        }

        while (*qstr = = *pstr && *pstr!= ' i ' && *qstr '!= ')
        {
            num++;
            index = PSTR;
            qstr++;
            pstr++;
        }

        if (num>=1)
            index = index-num+1;
        if (num > Maxnum) {
            maxnum = num;
            Maxindex = index;
        }

        Qstr = pstr+1;
    }

    cout << "Result:";
    for (int i=0;i<maxnum;++i)
        cout << *maxindex++ << ";
    cout << Endl;
}


int main ()
{
    char* str = "ABCABCDABCD";
    FINDSTR (str); 

    return 0;
}