C：sscanf的问题 [英] C: sscanf problem

问题描述

嗨结果
我有这样一个文本文件：

Hi
I have a text file like this:

2结果
10 5结果
器B31 2结果
C 6 6

2
A 10 5
B 31 2
C 6 6

我想读一个变量结果第一行号
并读取3个变量的每一行的空格隔开3个值的列表。
我写这篇code：

I want to read first line number in a variable
and read each line's space separated list of 3 values in 3 variables. I wrote this code:

iF=fopen(fileName,"r");
fgets(tmp,255,iF);
sscanf(tmp,"%d",&interval);

while(!feof(iF)){
    cur=(P *)malloc(sizeof(P));
    fgets(tmp,255,iF);
    sscanf(tmp,"%c %d %d",&Name,&AT,&ET);
    cur->jobName=Name;
    cur->arrivalTime=AT;
    cur->execTime=ET;
    add_to_list(head,cur);
}

它可以正确处理行1,3,4而不是2号线！
在第2行它存储什么！
正如我在调试器检查一些奇怪的字符是在文件中（\\ 342 \\ 200 \\ 252），我不知道他们从哪儿来！？

It works correctly for lines 1,3,4 but not for line 2! in line 2 it stores nothing! As I check in Debugger some strange chars are in the file (\342\200\252) and I don't know where are they from!?

这是什么问题？

感谢

推荐答案

以下code为我工作：

The following code works for me:

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    const char *fileName = "data.txt";
    FILE *iF;
    int interval;
    char Name[256], tmp[256];
    int AT, ET;

    iF = fopen(fileName, "r");
    if (fgets(tmp, 255, iF) == NULL)
        goto error;
    if (sscanf(tmp, "%d", &interval) != 1)
        goto error;

    while (fgets(tmp, 255, iF) != NULL) {
        if (sscanf(tmp, "%c %d %d", Name, &AT, &ET) != 3)
            goto error;
        fprintf(stdout, "%s, %d, %d\n", Name, AT, ET);
    }
    return 0;

error:
    fprintf(stderr, "error while reading from the file.\n");
    return 1;
}

请注意多少code的专门用于错误处理。这是必要的。

Note how much of the code is dedicated to error handling. That's necessary.

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