getchar() function

Question

I am currently trying to count the digits of a number using getchar().

If i do it with getchar (condition to not count the point or comma) and I put a number like 345.234 does it count 6 like 3-4-5-2-3-4 or does it count 4 like 34-5-23-4?

i=0
while((c=getchar())!=',' && c!=EOF)
i++;

SIMPLE QUESTION HOW MUCH DOES IT COUNT 345.234 and ctrl+z on the input all at once Does it count 4 or does it count 6

Describing what you are doing doesn't get it done. Show your code. — David Heffernan, Mar 31 '13 at 16:19
How about reading the definition of `getchar`, eg. http://www.cplusplus.com/reference/cstdio/getchar/ ? — Neil Townsend, Mar 31 '13 at 16:21
Returns the next character????Are you even reading my question. — Lind, Mar 31 '13 at 16:23
Strange community is strange.All asking the code,this guy!!!!!!!!!! Huh, what? I don't understand. – H2CO3 -Useless comment buddy as always — Lind, Mar 31 '13 at 16:25
Dear Lind, it could be the case, people do not understand your question. — alk, Mar 31 '13 at 16:26

score 1 · Accepted Answer · answered Mar 31 '13 at 16:32

1

i will be incremented for each call to getchar() as long as not EOF or ',' is returned.

If you enter 345.234 and then hit Ctrl-Z this would lead to a value of 7 for i when leaving the while loop.

3 numbers + 1 dot + 3 numbers = 7 characters.

answered Mar 31 '13 at 16:32

alk

69,737
10
105
255

So it doesnt get the 34,5,23,4.Ok thats what I wanted to know. – Lind Mar 31 '13 at 16:35
@Lind: Again, just out of curiosity: How do you get the idea it could count two characters as one? – alk Mar 31 '13 at 16:37
since a char can take up to 127,I thought it might get 34 instead of 3,4.Seems I was wrong. – Lind Mar 31 '13 at 18:39
The characters you enter are represented by numbers, even the numbers themself are nothing more then characters. Also any other sign is treated the same way. Each character has a code between 0 and 127. `'0'` is 48, `'1'` is 49, ... `'A'`is 65, `'B` is 66, ..., `'.' ` is 46. This code is read and stored in the variable `c` of your source. – alk Mar 31 '13 at 18:44

score 0 · Answer 2 · answered Mar 31 '13 at 16:34

0

Maybe

#include <stdio.h>

int main(){
    int i=0,c;
    while(EOF!=(c=getchar())){
        if(c != ',' && c != '.' && c!= '\n')
            ++i;
    }
    printf("number count is %d\n", i);
    return 0;
}

answered Mar 31 '13 at 16:34

BLUEPIXY

39,699
7
33
70

getchar() function

2 Answers2