For this code:
int i;
scanf("%d\n",&i);
I am not able to stop my program until I input two numbers.
I think it is very strange ,I know when the input is suitable,the scanf will return 1. When I input "12a 'Enter'","12 'Enter'2" and so on ,it is ok,the i=12,it seems that when I input something is different int or input a 'Enter' and something another,the scanf returns 1.
What am I missing?
"I am not able to stop my program until I input two numbers when I use scanf("%d\n",&i);
"
Although this format makes scanf
read the number and store it into i
, this "reading" continues and it lasts till non-whitespace character followed by \n
is found. This is the reason why input 1 2
makes this scanf
stop.
You should not specify newline in the input format in this case.
Use scanf("%d",&i);
instead.