c - 尝试通过指针返回 char 数组，但给出了不正确的结果

Question

我的代码是:

#include <stdio.h>
#include <string.h>
char *getUserInput() {
    char command[65];

    //Ask the user for valid input
    printf("Please enter a command:\n");
    fgets(command, 65, stdin);

    //Remove newline
    command[strcspn(command, "\n")] = 0;
    return command;
}

int main() {
    char *recCommand = getUserInput();
    printf("%s", recCommand);
    return 0;
}

执行此代码时，这是控制台:

Please enter a command:
Test <-- this is the command I entered
*weird unknown characters returned to console*

为什么有奇怪的未知字符返回到控制台而不是“Test”？

Answer 1

这是因为您正在返回局部变量的值。尝试这样写:

char *getUserInput() {
    static char command[65];

    //Ask the user for valid input
    printf("Please enter a command:\n");
    fgets(command, 65, stdin);

    //Remove newline
    command[strcspn(command, "\n")] = 0;
    return command;
}