How to get integer input in an array using scanf in C?

Question

I am taking multiple integer inputs using scanf and saving it in an array

while(scanf("%d",&array[i++])==1);

The input integers are separated by white spaces for example:

12 345 132 123

I read this solution in another post.

But the problem is the while loop is not terminating.

What's the problem with this statement?

Answer 1

OP is using the Enter or '\n' to indicate the end of input and spaces as number delimiters. scanf("%d",... does not distinguish between these white-spaces. In OP's while() loop, scanf() consumes the '\n' waiting for additional input.

Instead, read a line with fgets() and then use sscanf(), strtol(), etc. to process it. (strtol() is best, but OP is using scanf() family)

char buf[100];
if (fgets(buf, sizeof buf, stdin) != NULL) {
  char *p = buf;
  int n;
  while (sscanf(p, "%d %n", &array[i], &n) == 1) {
     ; // do something with array[i]
     i++;  // Increment after success @BLUEPIXY
     p += n;
  }
  if (*p != '\0') HandleLeftOverNonNumericInput();
}

Answer 2

//Better do it in this way
int main()
{
  int number,array[20],i=0;
  scanf("%d",&number);//Number of scanfs
  while(i<number)
  scanf("%d",&array[i++]);
  return 0;
}