Reading a single character in C

Question

I\'m trying to read a character from the console (inside a while loop). But it reads more than once.

Input:

a

Output:

Answer 1

scanf("%c",&in);

leaves a newline which is consumed in the next iteration.

Change it to:

scanf(" %c",&in); // Notice the whitespace in the format string

which tells scanf to ignore whitespaces.

OR

scanf(" %c",&in);
getchar(); // To consume the newline