Help with this code

[Gouki]

I can't figure out certain parts of this code. Any help is greatly appreciated.
Specifically I dont really understand the words array.

#include <iostream>

using namespace std;

int main()
{
	char line[100] =
		"This is a text from mi nights";
	int numberOfWords

	words[0] = 0;
	numberOfWords = 1;
	for (int i = 0; line[i] != '\0'; i = i + 1)
		if (line[i] == ' ')
		{
			line[i] = '\0';
			words[numberOfWords] = i + 1;
			numberOfWords ++;
		}

	for (int i = 0; i<numberOfWords; i++)
	{
		cout << "A word: ";
		for (int j = words[i]; line[j] != '\0'; j = j + 1)
			cout << line[j];
		cout << endl;
	}
}

 char line[100] =
		"This is a text from mi nights";
	int words[20];
	int numberOfWords;

		words[0] = 0;
		numberOfWords = 1;

OK so here I declare and initialize my variables and arrays. So far so good. Im not understanding why words[0] is put to o and numberOfWords is put to 1.

   for (int i = 0; line[i] != '\0'; i = i + 1)
		if (line[i] == ' ')
		{
			line[i] = '\0';
			words[numberOfWords] = i + 1;
			numberOfWords++;
		}
     

Here I know I will loop through the line array and since its a char array it will stop at \0. Then the if statement says that 'space' equals \0 so itl stop as soon as it encounters a space. Thus creating a new string each time it hits \0. Since I didnt quite understand the use of words[] before, Im absolutely clueless what words[numberOfWords]does here and why it is set equal to i+1. Afterward numberOfWords is incremented after every loop, I get it and I think once I understand the meaning of this : words[numberOfWords] = i + 1 the increment will make sense as well.

for (int i = 0; i<numberOfWords; i++)
	{
		cout << "A word: ";
		for (int j = words[i]; line[j] != '\0'; j = j + 1)
			cout << line[j];
		cout << endl;
	}
        

Im not quite sure if what i think I understood here is right. Actually my problem starts with the first for loop, as I dont understand the condition why i<numberOfWords. What it does is it prints "A word" to the console before every other word that is printed out.
OK so the second for loop. Well j is set to words[i] which is 0. So line[j] is really line[words[0]] and 0 is incremented by one after every loop. The problem is again that I cant understand the meaning of the words array. What is its use. Why and how does it interact with the line array. Why is it set to 0 in line 12. And Why is numberOfWords = 1 in line 13.

Thanks so very much for your help. Im basically all on my own trying to figure this out and Im having a hell of a hard time doing it.

[nuderobmonkey]

From where you have this? That's a nice exercise testing if someone understanding arrays.
Beside this, it's f****** bad style :-)

Here i have the code somewhat formatted and added a few comments for better understanding what's going on:

#include <iostream>

using namespace std;

int main()
{
    char line[] = "This is a text from mi nights";
    
    int words[20]; // gets the start-indices of each word
    
    int numberOfWords = 1; // Here is at least one word

    words[0] = 0; // word 0 starts at index 0 of 'line'

    // changes all spaces to '\0' (the c-string end),
    // saves the indice of all words relative to 'line',
    // counts the words
    for ( int i = 0; line[i] != '\0'; ++i ) {
    
        if ( line[i] == ' ' ) {
        
            // changes each space to '\0'
            line[i] = '\0';

            // saves the index of the next word
            words[numberOfWords] = i + 1;
            
            // increases the counter
            numberOfWords ++;
        }
    }
    
// prints all words by using its start-indices
    
    // for each word:
    for ( int i = 0; i < numberOfWords; ++i ) {
    
        cout << "A word: ";
        
        // for each start-index until '\0':
        for ( int j = words[i]; line[j] != '\0'; ++j ) {
        
            // prints a single character
            cout << line[j];
        }
        // the line break
        cout << endl;
    }
}

*edited