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

you could always use char a = fgetc (stdin);. Unconventional, but works just like getchar().

Answer 2

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 

Answer 3

To read just one char, use getchar instead:

int c = getchar();
if (c != EOF)
  printf("%c\n", c);

Answer 4

in scanf("%c",&in); you could add after %c a newline character \n in order to absorb the extra characters

scanf("%c\n",&in);

Answer 5

you can do like this.

char *ar;
int i=0;
char c;
while((c=getchar()!=EOF)
   ar[i++]=c;
ar[i]='\0';

in this way ,you create a string,but actually it's a char array.