Split on Commas

Lab C Intermediate 20 points

Read a line of comma-separated values and print each value on its own line (trimmed of spaces), without strtok.

Input

One line.

Output

One value per line.

Example

Input

red, green ,blue

Output

red
green
blue

Sample input available Sample output available

Editor

Hints

Remember where the current value starts; print it when you reach a comma or the end.

Solution explanation

A (start, end) pair of positions describes a piece of a string without copying it.

Show solution

#include <stdio.h>
#include <string.h>

void print_trimmed(char *s, int start, int end) {
    while (start < end && s[start] == ' ') start++;
    while (end > start && s[end - 1] == ' ') end--;
    for (int i = start; i < end; i++) printf("%c", s[i]);
    printf("\n");
}

int main() {
    char s[300];
    fgets(s, 300, stdin);
    s[strcspn(s, "\n")] = '\0';
    int start = 0;
    int i = 0;
    while (s[i] != '\0') {
        if (s[i] == ',') {
            print_trimmed(s, start, i);
            start = i + 1;
        }
        i++;
    }
    print_trimmed(s, start, i);
    return 0;
}

Output

Answer