使用scanf（）在一行中有多个输入？

Question

I used scanf() function and realized that I could input only one number into an array using it. Is there any way to read the whole number in a single line?

ex:

for(i=0;i<5;i++)
     {
     scanf("%d",&arr[i]);
     }

I wanted to read all the 5 digits in a single line.. Hope I'm clear enough!

Answer 1

If you mean a single source code line, you could use either:

scanf ("%d %d %d %d %d", &arr[0], &arr[1], &arr[2], &arr[3], &arr[4]);

or:

for (i = 0; i < 5; i++) scanf ("%d", &(arr[i]));

If you meant a single input line, both those are fine as well. The %d will skip leading white space in the stream so it makes little difference whether you enter:

1 2 3 4 5

or:

1
2
3 4
5

I prefer the loop version myself since it can be made arbitrarily large without making your source code line way too long.

Answer 2

Though you want it in array . A number of 5 digits can be stored in single int variable (depending on what is size of int on your system).

In a single scanf you can do this -

scanf("%d %d %d %d %d",&a[0],&a[1],&a[2],&a[3],&a[4]);

This -

 for(i=0;i<5;i++)
 {
    scanf("%d",arr[i]);  //you missed &  should be scanf("%d",&arr[i]);
  } 

Answer 3

您可以使用scanf ("%d %d %d %d %d", &arr[0], &arr[1], &arr[2], &arr[3], &arr[4]);