每行仅从strtok()获取2个令牌

char *strtok(char *str, const char *delim);

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

int main() {
    char str[] = "token1 token2 token3 token4";
    char *token;

    token = strtok(str, " ");
    while (token != NULL) {
        printf("%s\n", token);
        token = strtok(NULL, " ");
        if (token != NULL) {
            printf("%s\n", token);
            token = strtok(NULL, " ");
        }
    }

    return 0;
}

token1
token2
token3
token4