Question

在此,我陷入困境。我有档案,希望在节目打上标号之前,读到所有特性,在编号后忽视这一行文上的一切。例如

0 4001232 0 #comment, discard

这令人沮丧,因为它认为,像有一个非常简单的解决办法一样。感谢!

Answer 1

FILE *f = fopen("file.txt", "r");
int c;
while ((c = getc(f)) !=  #  && c != EOF)
   putchar(c);

Answer 2

∗∗∗∗∗∗∗∗∗∗。

阅读另一行......

Answer 3

There are plenty of ways and examples of how to do it. Usually, the idea is to have a variable that holds the state (before #, after # , after etc.) and run in a while loop until EOF. an example you can see here it s a program to remove C comments, but the idea is the same.

Answer 4

filePointer = fopen("person.txt", "r");

do
{
    read = fgetc(filePointer);
    //stop when  #  read or when file ends
    if (feof(filePointer) || read ==  # )
    {
        break;
    }
    printf("%c", read);
} while (1);

fclose(filePointer);

另外,如果档案开张,你会进行更好的检查。

if (filePointer == NULL)
{
    printf("person.txt file failed to open.");
}
else
{
    file operations
}

Answer 5

解决办法取决于你是如何“阅读”的。

I could, for example, just remove all of those comments with sed s/#.*// <infile >outfile in bash.

EDIT:然而,如果我用手法说话的话,我可以简单地(在座右边)说了。

if(line[i]== # ) {
    continue;
}

这样做将停止穿透这条路。

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