C's Questions about input scanf and other inputs

Ask:

Why study for more than a year of C language, still do not understand those input function usage, for example: scanf, getch,gets, etc.

For:

Summary from now on 、、、、、

Ask:

It is too late to sum up these basic knowledge, and the others have become great gods.

For:

It's never too late to be aware of your flaws.

"scanf":

1. scanf input integer, with int, float type with%f, double type with%LF.

2. scanf ("%c", ch);

At this point, whether you enter a carriage return, a space, or a tab, it will count as the input of Ch.

3.SCANF ("%s", string);

%s Enter a string with a space, carriage return, tab end, for example: type She is a good girl, then the result of string is she.

and the spaces do not count as string characters.

Add: The mark at the end of string is "".

Char string[100];
scanf ("%s", string);
for (int i=0;string[i]!= ' n '; i++)
printf ("%c", String[i]);
return 0;

If the end condition of the string is changed to "\ n", garbled text will appear because the end condition is not \ n.

Another problem is that you can't enter strings with scanf ("%c", &string[i]).