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Help with input
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I want to take integer inputs separated by spaces and terminated by newline character. suppose the user will be inserting integers this way
123 566 789 45 34 8999 341 57 67 and then the user presses enter.
so the program will read all the integers when the user presses enter. The integers will be put into a linked list.
Note: 1. I dont want to do any parsing(first taking them as string and then separating the integers).
2. I could use an end condition like enter -1 to stop taking inputs, but dont like that idea either.
The thing is i m trying to make a electronic menu driven index, where there is a binary search tree and each treenode contains a word and a linked list of integers to hold the pages where the word appears in. I will first prompt the user for a word and then for the page numbers. But i need to read the inputs(page numbers) in a smart and convenient way. Let me know if u guys can help me with that.
123 566 789 45 34 8999 341 57 67 and then the user presses enter.
so the program will read all the integers when the user presses enter. The integers will be put into a linked list.
Note: 1. I dont want to do any parsing(first taking them as string and then separating the integers).
2. I could use an end condition like enter -1 to stop taking inputs, but dont like that idea either.
The thing is i m trying to make a electronic menu driven index, where there is a binary search tree and each treenode contains a word and a linked list of integers to hold the pages where the word appears in. I will first prompt the user for a word and then for the page numbers. But i need to read the inputs(page numbers) in a smart and convenient way. Let me know if u guys can help me with that.
"He who mixes with people and endures the harm they do is better than he who does not mix and endures." (Tirmidhi)
try something like
replace \n with the corresponding value for your OS (or find some way to detect it and use the detected value).
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replace \n with the corresponding value for your OS (or find some way to detect it and use the detected value).
To Jwenting,
ahem ahem,:rolleyes:
Thanx for that boss,BUT
i havent learned to use STL yet, and i dont plan to use them until i study them thoroughly and that's not gonna happen anytime soon. Do u have any non-STL solution to the problem?
ahem ahem,:rolleyes:
Thanx for that boss,BUT
i havent learned to use STL yet, and i dont plan to use them until i study them thoroughly and that's not gonna happen anytime soon. Do u have any non-STL solution to the problem?
"He who mixes with people and endures the harm they do is better than he who does not mix and endures." (Tirmidhi)
hmm, I do believe in using the best tool for the job and that's the STL.
Another way would have you create a linked list of ints and read them into that instead of into a vector.
The STL solution probably does something similar internally, clearing you of all that messing around with pointers.
Another way would have you create a linked list of ints and read them into that instead of into a vector.
The STL solution probably does something similar internally, clearing you of all that messing around with pointers.
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Originally Posted by Asif_NSU
I want to take integer inputs separated by spaces and terminated by newline character. suppose the user will be inserting integers this way
123 566 789 45 34 8999 341 57 67 and then the user presses enter.
so the program will read all the integers when the user presses enter. The integers will be put into a linked list.
Note: 1. I dont want to do any parsing(first taking them as string and then separating the integers).
I suppose you could write your own input functions, but that seems like much more work than reading and parsing a line.
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Another way would have you create a linked list of ints and read them into that instead of into a vector.
"He who mixes with people and endures the harm they do is better than he who does not mix and endures." (Tirmidhi)
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These two requirements may be somewhat at odds. Input functions that are whitespace delimited may not distinguish between a space and a newline.
"He who mixes with people and endures the harm they do is better than he who does not mix and endures." (Tirmidhi)
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Originally Posted by Asif_NSU
Can u suggest me any other technique to read in the page numbers easily one by one untill we meet some "end condition". What would be a smart end condition?
"EOF"
>>I did try that too. But the problem is when i signal the EOF it stops taking input alright but doesnt take any other inputs after that. Say after inserting the page numbers the user might want to go back to the main menu and then from their might choose to search for a word in the dictionary, but using EOF as the end condition doesnt let u do that. So any other suggestions?
>>I did try that too. But the problem is when i signal the EOF it stops taking input alright but doesnt take any other inputs after that. Say after inserting the page numbers the user might want to go back to the main menu and then from their might choose to search for a word in the dictionary, but using EOF as the end condition doesnt let u do that. So any other suggestions?
"He who mixes with people and endures the harm they do is better than he who does not mix and endures." (Tirmidhi)
you're parsing numbers from the input.
I guess you're using atoi to turn the input into ints as you'll be reading it as char* ?
Check the docs for atoi, it will return 0 if the input is not recognised.
Pagenumber 0 is highly unusual, you could use that as a boundary condition (or a negative number might even be better).
So say you want the user to terminate the input by typing -1. atoi("-1") will return -1 which will flag you that the user is done inputting text.
I guess you're using atoi to turn the input into ints as you'll be reading it as char* ?
Check the docs for atoi, it will return 0 if the input is not recognised.
Pagenumber 0 is highly unusual, you could use that as a boundary condition (or a negative number might even be better).
So say you want the user to terminate the input by typing -1. atoi("-1") will return -1 which will flag you that the user is done inputting text.
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