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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <ctype.h>
static char errmark[] = "stop+";
#define ERRLEN (sizeof(errmark)-1)
int
main(int argc, char **argv)
{
int c;
int i = 0;
int bol = 1;
int ex = 0;
FILE *input;
if (argc > 1) {
input = fopen(argv[1], "r");
if (!input) {
perror("input");
return 1;
}
}
while ((c = fgetc(input)) != EOF) {
if (bol) {
if (i < ERRLEN) {
if (c != errmark[i]) {
if (i)
fwrite(errmark, i, 1, stdout);
fputc(c, stdout);
bol = i = 0;
}
} else if (i == ERRLEN) {
if (!isdigit(c)) {
fwrite(errmark, i, 1, stdout);
fputc(c, stdout);
bol = i = 0;
}
ex = c - '0';
} else if (isdigit(c)) {
ex = ex * 10 + c - '0';
} else {
return ex;
}
i++;
} else {
fputc(c, stdout);
if (c == '\n') {
bol = 1;
i = 0;
}
}
}
return 0;
}
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