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

[tta aaa]

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
0

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

1-3+2
1+3-6
5-7+2
1+5-6

First i have to read from the file the first line`s elements, could enyone help me?

[Raj K]

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




-RajX

[tta aaa]

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?

[johny10151981]

use fgets function to read line from file

do rest by yourself

[tta aaa]

i`ve red each line as a string, but now how can-i split it at space characters? any c code? pls