在 c 中输入 Enter 键时摆脱 while 循环

Question

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

#define BAR 1
#define BELL 2
#define LEMON 3
#define CHERRY 4
#define RMAX 4

void main()
{
    int slot1, slot2, slot3;
    char anykey;

    while (1)
    {
        printf("Type any key to start the slot machine \n");
        scanf(" %c", &anykey);
        if (anykey == '\n')
        {
            break;
        }
        srand(time(NULL));
        slot1 = 1 + (int)rand() % RMAX;
        slot2 = 1 + (int)rand() % RMAX;
        slot3 = 1 + (int)rand() % RMAX;

        if (slot1 == slot2 && slot2 == slot3 && slot1 == 1)
            printf("Congradulations On A JACKPOT\n");
        else if (slot1 == 1 || slot2 == 1 || slot3 == 1)
            printf("ONE dime \n");
        else if (slot2 == slot1 && slot2 == slot3)
            printf("One Nickel \n");
        else printf("Sotrry better luck next time\n");
    }
}

I made a code like this and I want to break free from while loop when enter key is pressed so I add the code if (anykey=='\\n') but it doesn't work what is wrong with my code

Answer 1

scanf(" %c", &anykey); consumes the newline from stdin before actually reading any character, which is why anykey never actually ends up being \\n

If you must have the newline as a break condition (as in hitting enter will stop the program), you're better off using getchar for this, you can use scanf("%c", ...) but that's a bit overkill.

printf("Type any key to start the slot machine \n");
int ch = getchar();
/* Should check for `EOF` too */
if (ch == '\n' || ch == EOF)
{
    break;
}
anykey = (char) ch;