cut

The cut Command

cut extracts a specific field from each line of delimited text:

$ printf "alice:30:engineer\nbob:25:designer\n" | cut -d: -f2
30
25

-d: sets the delimiter to :, and -f2 selects the second field. Fields are 1-indexed.

Your Implementation

Write void my_cut(const char *s, char delim, int field) that prints the given field from each line.

The algorithm: for each line, count delimiter occurrences to track which field you are in. When you reach the target field, print its characters.

void my_cut(const char *s, char delim, int field) {
    while (*s) {
        int cur = 1;
        while (*s && *s != '\n') {
            if (*s == delim) {
                cur++;
            } else if (cur == field) {
                putchar(*s);
            }
            s++;
        }
        putchar('\n');
        if (*s == '\n') s++;
    }
}

Counting Fields

Each time you encounter the delimiter, move to the next field (cur++). When cur == field, the current character belongs to the target field — print it. Delimiter characters themselves are never printed.

Your Task

Implement my_cut that prints the specified field from each line using the given delimiter.