C, getc/fgetc - terminal null

Question

I'm writing program that counts words in C, I know I can do this simply with fscanf. But I'm using getc.

I have file like this:

One two three four five.

I'm reading chars in while loop and breaking point is when I reach terminal null.

Will c = fgetc(input); or c = getc(input); set c = '\0'; after One_ and after two_ etc.?

Answer 1

When a return value of a function like getc() is EOF which is -1,then you have reached the end of file.try this code to count words:

#include <stdio.h>

int WordCount(FILE *file);

int main(void)
{
    FILE *file;
    if(fopen_s(&file,"file.txt","r")) {
        return 1;
    }
    int n = WordCount(file);
    printf("number of words is %d\n", n);
    fclose(file);
    return 0;
}

int WordCount(FILE *file)
{
    bool init = 0;
    int count = 0, c;
    while((c = getc(file)) != EOF)
    {
        if(c != ' ' && c != '\n' && c != '\t') {
            init = 1;
        }
        else {
            if(init) {
                count++;
                init = 0;
            }
        }
    }
    if(init)
        return (count + 1);
    else
        return count;
}