//1. Write a function whose subtype is int continumax(char *outputstr,char *intputstr).
//Function:
//Find the longest string of consecutive digits in the string and return the length of the string,
//The longest number is passed in a string to the memory of one of the function arguments outputstr.
//For example: "abcd12345ed125ss123456789", after the first address to intputstr function returns 9, outputstr referring value is 123456789
#include<stdio.h>
#include<assert.h>
int continumax(char *outputstr,char *inputstr)
{   
    assert(outputstr);
    assert(inputstr);
    int length = 0;
    int maxlength = 0; 
    int i = 0;
    int j = 0;
    while(inputstr[i] != '0')
    {
        while( inputstr[i] >='0'&& inputstr[i] <= '9')
        {   
            length++;
            i++;
        }
        if(length > maxlength)
        {
            maxlength = length;
            int k = i-maxlength;
            for(j = 0; j < maxlength; j++ )
            {  

                outputstr[j] =inputstr[k++];

            }
            length = 0;
            continue;
        }
        i++;
        length = 0;
    }
        outputstr[j] = '0';
        return maxlength;
}

 

int main( )
{   
    char inputstr[ ]= "abcd12345eddafsd125ss123456789";
    char outputstr[100];

    int max_numstr_length = continumax(outputstr,inputstr);
    printf("%sn",outputstr);
    printf("the max_numstr_length is %dn", max_numstr_length);
    return 0;
}

#include<iostream.h>
#include<malloc.h>

 
int continumax(char * outputstr, char * inputstr)
{
    int len = 0;        //The length of the statistics string
    int max = 0;        //The length of the current maximum number string
    char *pstr =NULL;   //Records the starting position of the maximum numeric character

 
    while(* inputstr!= '0')
    {
        if(*inputstr <= '9' && *inputstr >='0')  //The length of the statistics substring
        {
            len++;
            inputstr++;
            continue;
        }
        else if (len > max)        //Updates if the number string is greater than the length of the current maximum number substring
        {
            max = len;
            pstr = inputstr-len;      
            len = 0;
        }
        inputstr++;
    }
    for(int i = 0 ; i<max;i++)  //Copy the value of the largest substring to outputstr
    {
        *outputstr = *pstr;
        outputstr++;
        pstr++;
    }

       outputstr = outputstr-max;
       outputstr[max] ='0';
       cout<<outputstr<<endl;

       return max;

     
}

int main()
{
    char input[] = "de1234de123456ed";
    //char * out = (char *)malloc(100*sizeof(char));
    char output[100];
    int max = continumax(output, input);
    cout<<max<<endl;
    return 0;
}