而不是告诉你不要使用 scanf() 的答案，你可以否定扫描集 scanf() 选项:

Rather than the answers that tell you not to use scanf(), you can just the the Negated scanset option of scanf():

scanf("%99[^
]",comment); // This will read into the string: comment 
                           // everything from the next 99 characters up until 
                           // it gets a newline