How can I get a fixed length string without side-effect?

[lilydjwg]

Hi there,

Here is what I've tried:

#include<stdio.h>

int main(){
  char str[10];
  int a;
  fgets(str, 10, stdin);
  scanf("%d", &a);
  printf("str is %s and the int is %d.\n", str, a);
}

the result is:

$ ./test
abc 123 37482 <-- input
str is abc 123 3 and the int is 7482. <-- output

The str is what I want but the int is not.
What I want is like this:

$ ./test
abc 123 37482 <-- input
123 <-- another input for the int
str is abc 123 3 and the int is 123. <-- output

How can I achieve this?

[Dino]

Since fgets() is truncating the string because you have limited it, the remaining chars are still in the input buffer. Suck them out until you have sucked out the newline. Then, issue the scanf().

[lilydjwg]

Oh, I see. Thank you!