sb3 2 bac2020 t20

#include <stdio.h>
#include <string.h>
#define NMAX 103
#define SEP " "
char s[NMAX], aux[NMAX];

int main() {
    gets(s);

    char *token = strtok(s, SEP);
    while (token) {
        char *p = strchr(token, ',');
        if (p) {
            strncat(aux, token, strlen(token) - strlen(p));
        } else {
            strcat(aux, token);
        }
        strcat(aux, " ");
        token = strtok(NULL, SEP);
    }

    strcpy(s, aux);
    puts(s);
    return 0;
}