Thread: how to grab values from a line?

Originally Posted by mangekyou

If I write 123456 or 1 2 3 4 5 6 or 1,2,3,4,5,6 and press enter.

I would prefer different approaches for each. For 123456, I would read into a string and then convert each character in the string to its corresponding int value, say by subtracting the character '0'. For 1 2 3 4 5 6, it might be simpler to just call scanf in a loop, or to read as a string with fgets and then call sscanf in a loop. For 1,2,3,4,5,6, reading as a string then parsing with strtok might be good.

Originally Posted by mangekyou

Or

1 (I press enter)
2 (enter)
....

scanf in a loop sounds like it could work for this.

Originally Posted by mangekyou

If I write 123456 or 1 2 3 4 5 6 or 1,2,3,4,5,6 and press enter. Or

1 (I press enter)
2 (enter)
....

Is there a way I can catch every single digit and store them as an int? If so, what is that called? I dont need the code, I just want to know what its called so I can read about it, but example code will be appreciated

For "1 2 3 4 5 6" and "1,2,3,4,5,6" you can use a single scanf() call (scanf from scan function):

Code:

int a[6];

scanf("%d %d %d %d %d %d", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]); // if separated by spaces
scanf("%d,%d,%d,%d,%d,%d", &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]); // if separated by commas.

In the first case, scanf() doesn't care if you type the values individually or not... In the second case, you must type the commas.

If you type all values together, you must separate them by yourself (scanf() thinks 123456 is a single integer).

Of course, if you have a variable quantities of numbers, using scanf() in a loop is a good idea if they are separated.