Read inputs separated by space

[acpower]

If I am reading input from a file such as

1 2 3 4 5

How do I get my program to register each number as separate input?

Thanks

[anduril462]

Look at scanf. When used with most* format specifiers, it will stop at or skip over white space (space, tab, newline). This works well for files like yours, with numbers. Use "%d" for integers, "%f" for floats and "%lf" for doubles. There are lots more options, but those should cover 90% of your cases. scanf is great for well formatted files, but can be a pain for user input or files where typos are common.

* I say most. The behavior for reading characters (using "%c") is different, and the behavior for reading strings strings (using "%s") may be undesirable, i.e. you can't read multi-word strings.

[dmh2000]

an alternative to scanf is to read a whole line with fgets and then separate the inputs with strtok.