KR2

#include <stdio.h>
#include <ctype.h>
int main(void)
{
    int sym, c = 0, rev = 0;
    FILE* file;
    FILE* fout;
    if ((file = fopen("input.txt", "rt")) == NULL) {
        printf("Can't open input file!\n");
        return -1;
    }
    if ((fout = fopen("output.txt", "wt")) == NULL) {
        printf("Can't open output file!\n");
        fclose(file);
        return -1;
    }
    sym = fgetc(file);
    if (sym == EOF)
    {
        printf("cannot read text\n");
        fclose(file);
        fclose(fout);
        return -1;
    }
    while(sym != EOF)
    {
        if (sym == '\\'){
            rev = 1;
        }
        else if (sym == 'n' && rev == 1)
        {
            fprintf(fout, "\n");
            c = 0;
            rev = 0;
        }
        else if (sym == ' ' || sym == '\t')
        {
            c++;
        }
        else if (c != 0)
        {
            if (fputc('-', fout) == EOF)
            {
                printf("Cannot write the symbol\n");
                return -1;
            }
            if (fputc(sym, fout) == EOF)
            {
                printf("Cannot write the symbol\n");
                return -1;
            }
            c = 0;
        }
        else
        {
            if (fputc(sym, fout) == EOF)
            {
                printf("Cannot write the symbol\n");
                return -1;
            }
        }
        sym = fgetc(file);
    }
    return 0;
}