Question

Please, write code in c++. Using iostream and cstring library

Use pointers!

You given a text.Your task is to write a function that will find the longest sequence of digits inside.
Note that the output have to be presened just like in sample.

Note. The program have to use pointer.

Input:
First line contains one line that is not longer than 1000.

Output:
The longest sequence of numbers.All numbers are positive and integers.

Samples:

№	INPUT	OUTPUT
1	This is the longest - 10001 number	10 001
2	101 fdvnjfkv njfkvn fjkvn jffdvfdvfd2010	2 010
2	1a11	11

Answer 1

WHOLE PROGRAM IN C++

#include <iostream>
#include<cstring>
using namespace std;

void function(char str[])
{
char ans[1000];
int k=0;
int max=0;
  
for(int i=0;str[i]!='\0';i++)
{
if(*(str+i)>='0'&& *(str+i)<='9')
{
char t[500];
int s=0;
int c=0;
for(int j=i;*(str+j)!='\0';j++)
{
if(*(str+j)>='0'&& *(str+j)<='9'){
t[s++]=*(str+j);
c++;
}
else
break;
}

if(max<c)
{
k=0;
for(int i=0;i<s;i++)
ans[k++]=*(t+i);
max=c;
}

}
}
  
char temp[k];
strcpy(temp,ans);
int index=0;
  

int count=0;
for(int i=k-1;i>=0;i--)
{
if(count==3)
{
temp[index++]=' ';
temp[index++]=*(ans+i);
count=0;
}
else
temp[index++]=*(ans+i);
  
count++;
}
  
  
//printing the results using pointers
for(int i=index-1;i>=0;i--)
cout<<*(temp+i);
  
}

int main() {

char str[1000];
cin.getline(str, 1000);
function(str);

   return 0;
}

EXAMPLE 1 :

EXAMPLE 2 :

EXAMPLE 3 :