Question: I have line like this 
and I am searching for how the input works when the code is executed 

```
scanf("%d, %f",&withdrawal ,&balance );

```

I use Cygwin to compile the code and afterwards I am asked for inputs.  

Does it mean that I have to write two numbers separated by space

```
60 120

```

or there is some trick to do that ?  

It could be an easy question, but I just would like to understand how it works when it is asked for more then one input value.  

Thanks

Answer: 
scanf(), or scan formatted, expects input in the format you specified. scanf("%d, %f") simply means you expect input in this exact format, for example: 62, 2.15 .
scanf expects an input as specified in quotes, as Matt Phillips mentioned.   

so, whether change a scanf to:

`scanf("%d %f", &withdrawal, &balance);` and then input `60 120` or just input `60, 120`