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1// C++ program to generate all possible
2// valid IP addresses from given string
3#include <bits/stdc++.h>
4using namespace std;
5
6// Function checks whether IP digits
7// are valid or not.
8int is_valid(string ip)
9{
10	// Splitting by "."
11	vector<string> ips;
12	string ex = "";
13	for (int i = 0; i < ip.size(); i++) {
14		if (ip[i] == '.') {
15			ips.push_back(ex);
16			ex = "";
17		}
18		else {
19			ex = ex + ip[i];
20		}
21	}
22	ips.push_back(ex);
23
24	// Checking for the corner cases
25	// cout << ip << endl;
26	for (int i = 0; i < ips.size(); i++) {
27		// cout << ips[i] <<endl;
28		if (ips[i].length() > 3
29			|| stoi(ips[i]) < 0
30			|| stoi(ips[i]) > 255)
31			return 0;
32
33		if (ips[i].length() > 1
34			&& stoi(ips[i]) == 0)
35			return 0;
36
37		if (ips[i].length() > 1
38			&& stoi(ips[i]) != 0
39			&& ips[i][0] == '0')
40			return 0;
41	}
42	return 1;
43}
44
45// Function converts string to IP address
46void convert(string ip)
47{
48	int l = ip.length();
49
50	// Check for string size
51	if (l > 12 || l < 4) {
52		cout << "Not Valid IP Address";
53	}
54
55	string check = ip;
56	vector<string> ans;
57
58	// Generating different combinations.
59	for (int i = 1; i < l - 2; i++) {
60		for (int j = i + 1; j < l - 1; j++) {
61			for (int k = j + 1; k < l; k++) {
62				check = check.substr(0, k) + "."
63						+ check.substr(k, l - k + 2);
64				check
65					= check.substr(0, j) + "."
66					+ check.substr(j, l - j + 3);
67				check
68					= check.substr(0, i) + "."
69					+ check.substr(i, l - i + 4);
70
71				// cout<< check <<endl;
72				// Check for the validity of combination
73				if (is_valid(check)) {
74					ans.push_back(check);
75					std::cout << check << '\n';
76				}
77				check = ip;
78			}
79		}
80	}
81}
82
83// Driver code
84int main()
85{
86	string A = "25525511135";
87	string B = "25505011535";
88
89	convert(A);
90	convert(B);
91
92	return 0;
93}
94
95// This code is contributed by Harshit
96

1123456789101112131415161718192021222324252627#include <iostream>#include <bits/stdc++.h>using namespace std;class ABS{    public:        void abs(int arr[], int n){    sort(arr, arr+n);    int c=0,i;    for (i=n-1;i-2>=0;i--){        if (arr[i-2]+arr[i-1]>arr[i]){            c=1;            break;        }    }    (c) ? cout<<arr[i-2]<<" "<<arr[i-1]<<" "<<arr[i]<<endl : cout<<-1<<endl;}};int main(){    ABS abx;    int arr[] = { 5,4,3,1,2};    int n = sizeof(arr) / sizeof(arr[0]);    abx.abs(arr, n);    return 0;}X

1#include <stdio.h>
2#include <stdlib.h>
3
4int main (void){
5	int vetor [2];
6	int *v; // ponteiro
7	v = vetor;
8	v[0] = 123;
9	v[1] = 456;
10	printf ("vetor[0] = %d\n", vetor[0]);
11	printf ("vetor[1] = %d\n\n", vetor[1]);
12	system ("pause");
13}