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How can-i read integers from a file, where the first line contains unknown elements?

P: 3
A set of natural numbers is given. Generate all the subsets of this set joined by alternating +and -operators which
sum up to exactly S. .
I/O description. Input: enumeration of elements in the set, on one line, then sum on one line e.g.

1 3 5 7 2 6

Output: enumeration of elements resulting in the given sum, e.g.


First i have to read from the file the first line`s elements, could enyone help me?
Dec 9 '10 #1
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4 Replies

P: 9
Read a whole line split it with white space chars. Now you get set of word. Parse each word to get integer.

Dec 9 '10 #2

P: 3
I searched on the internet for many codes, but it does't work. Could you give me some code? How can i read each line, and split them?
Dec 9 '10 #3

P: 1,059
use fgets function to read line from file

do rest by yourself
Dec 10 '10 #4

P: 3
i`ve red each line as a string, but now how can-i split it at space characters? any c code? pls
Dec 10 '10 #5

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