C 文件读取不会读取字符串中的数字数组

Question

fgets() 和 fscanf() 都不起作用，file.txt 有

1006 00600016 43212983 50016 06040086 0102111

My code reads the first integer pretty well but the not the 7 digit number? Any help?

int main(void)
{
    int numTotal = 0;
    int maxShy = 0;
    char temp[101];
    char ch;
    char * ptr;
    int count = 0;

    FILE *fp1 = fopen("file.txt", "r+");
    FILE *fp2 = fopen("output", "w");

    // read the first line, set the total number
    while ((ch = fgetc(fp1)) != '\n')
    {
        temp[count] = ch;
        count++;
    }
    temp[++count] = '\0';
    count = 0;
    numTotal = strtol(temp, &ptr, 10);
    printf("%d", numTotal);


    for (int i = 0; i < numTotal; i++)
    {
        // This part works fine
        fscanf(fp1, "%d", &maxShy);
        printf("%d ", maxShy);

        // This part doesn't outputs a different 7 digit number from 0060001 and others
        fscanf(fp1, "%s", temp);
        printf("%s\n", temp);
    }

    fclose(fp1);
    fclose(fp2);


    system("pause");
    return 0;
}

Answer 1

而不是

temp[++count] = '\0';

你需要

temp[count] = '\0';

因为您在 while 循环中递增 count。

此外，第一行表示需要 100 行文本。但是，您只剩下 6 行文本。此后什么也没有读到。添加检查以确保在读取失败时停止。

而不是:

fscanf(fp1, "%d", &maxShy);

使用

if ( fscanf(fp1, "%d", &maxShy) != 1 )
{
   break;
}

同样，使用:

if ( fscanf(fp1, "%s", temp) != 1 )
{
   break;
}