C | Operators | Question 27

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

int top = 0;

char fun1()
{
    char a[] = {'a', 'b', 'c', '(', 'd'};
    return a[top++];
}

int main()
{
    char b[10];
    char ch2;
    int i = 0;
    
    while ((ch2 = fun1()) != '(')
    {
        b[i++] = ch2;
    }
    
    b[i] = '\0'; // Add null-terminating character to mark the end of the string
    
    printf("%s", b);
    
    return 0;
}