从 fgets() 输入中删除尾随换行符 [英] Removing trailing newline character from fgets() input

问题描述

我正在尝试从用户那里获取一些数据并将其发送到 gcc 中的另一个函数.代码是这样的.

I am trying to get some data from the user and send it to another function in gcc. The code is something like this.

printf("Enter your Name: ");
if (!(fgets(Name, sizeof Name, stdin) != NULL)) {
    fprintf(stderr, "Error reading Name.
");
    exit(1);
}

但是，我发现它最后有一个换行符 .因此，如果我输入 John，它最终会发送 John .如何删除 并发送正确的字符串.

However, I find that it has a newline character in the end. So if I enter John it ends up sending John . How do I remove that and send a proper string.

推荐答案

优雅的方式:

Name[strcspn(Name, "
")] = 0;

有点丑的方式:

char *pos;
if ((pos=strchr(Name, '
')) != NULL)
    *pos = '';
else
    /* input too long for buffer, flag error */

有点奇怪的方式:

strtok(Name, "
");

请注意，如果用户输入空字符串(即仅按 Enter)，strtok 函数将无法按预期工作.它使 字符完好无损.

Note that the strtok function doesn't work as expected if the user enters an empty string (i.e. presses only Enter). It leaves the character intact.

当然还有其他的.

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