Answered: can you please help in splitting the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

can you please help in splitting the string into tokens with the delimiter as a space and not using strtok and returns only lowercase words in a string

It has to split the str using space delimiter

Input : "TRY to split words in a SentENCE'

output : only lowercase tokens [to split words in a]

char** split_tokens(const char* str)

In the below code it is not returning the tokens correctly. It is giving only TRY. Please advise

The function first adds a space to the starting of the string. Then a loop is used to iterate over the string.

Inside the loop we check for the spaces. On founding one, a flag counter is used to check if the next character is in uppercase or lowercase.

If in uppercase the flag value is set to 1, and all the characters(till we find a new space character) is added to a new 2-D array, which is then returned from the function.

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C Function

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#include <stdio.h>

char** split_tokens(const char* str)

{

//Adding a space in front.

strncat(str, " ", 0);

int n = strlen(str);

char word[50][50];

int countWord = 0;

int countChar = 0;

int flag;

for(int i = 0; i < n; i++)

{

if(isspace(str[i]))

{

//To check if the next character is in uppercase or lowercase

if(isupper(str[i+1]) == 1)

flag = 0;

else

flag = 1;

countWord++;

countChar = 0;

}

else

{

if(flag == 1)

{

word[countWord][countChar] = str[i];

countChar++;

}

return word;

}

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