c - 从 C 语言的文件中一次读取一个字符串

Question

如何一次读取输入一个字符串来调用 C 中的另一个函数。我认为这可行，但我的输出挂起:

#define BUFFMT "%255"
#define LINE_LEN 256
#define START_COUNT 1

// filename is declared in the main file elsewhere.  I know the file opens since I tried an //old method I use to read one line at time using fgets, but I didn't know how to do one //string at a time.  Thanks.
FILE *OpenFile(const char *fileName)
{
    FILE *fptr;
    if ((fptr = fopen(fileName, "r")) == NULL) {
        fprintf(stderr, "Error opening file %s, exiting...",  fileName);
        exit(EXIT_FAILURE);
    }
    return fptr;
}

LIST *CreateList(FILE *fp) 
{
    char buf[LINE_LEN];

    while (scanf(BUFFMT"s", buf) != EOF) {
        printf("%s: \n", buf);
    }
}

Answer 1

scanf()将从终端读取，因此它将挂起等待您输入输入。使用fscanf(fp, BUFFMT"s", buf)相反。