c getline 跳过空行

while(getline (&line, &line_size, f) != -1){}  

I'm using this function to read line line. But i want to know when i'm reading a blank line. Can someone help?

正如 H2CO3 已经提到的，您可以使用线长度：

while (getline (&line, &line_size, f) != -1) {

    if (strlen(line) == 1) {
        printf("H2CO3 spotted a blank line\n");
    }

    /* or alternatively */
    if ('\n' == line[0]) {
        printf("Ed Heal also spotted the blank line\n");
    }

    ..
}