C :: Inputting Data From Multiple Lines Using Scanf?

How would I go about inputting data from multiple lines using scanf?

So far I have tried a loop and somehow checking for '' but can't seem to figure it out..

E.g I want to be able to scanf the ints below line by line and print them( if that makes sense) .

5 15 20 30 5 6
5 6 8 20 34
5 6 7
5 2
2 6 7 2 1 6

This is what i've tried so far, but am really lost!

Code:

int input;
while(scanf("%d", &input)){
printf("%d",input);
if(input == '
'){
continue;}}