1. Suppose you have the following Program.
//No includes
int main()
{
    printf("Hello World!!!\n");
    //No returns
}

Will this code compile and run successfully?
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2. Let us suppose a program executes the following instructions:

for (i = 0; i < n; i++) fork();

How many processes are created in total (in terms of n)?
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3. Say we run this program.

if (fork() == 0)
  { a = a + 5; printf(“x = %d,y = %d\n”, a, &a); }
  else { a = a –5; printf(“u = %d, v = %d\n”, a, &a); }
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Which of the following are true ?
(a) u = x + 10 and v = y
(b) u = x + 10 and v != y
(c) u + 10 = x and v = y
(d) u + 10 = x and v != y
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4. What is the output of this program ?
int main () {
    int i, j, *p, *q;
    p = &i;
    q = &j;
    *p = 5;
    *q = *p + i;
    printf("i = %d, j = %d\n", i, j);
    return 0;
}
a) i = 5, j = 10
b) i = 5, j = 5
c) i = 10, j = 5
d) i = 10, j = 10
e) Nothing. The program will most likely crash.
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5. Where does the "hello world" reside ?
int main() {
    const char *str = "hello world";
    printf("%s\n", str);
}
a) .text section b) .data section c) .bss section d) stack e) heap
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6. What does the following command give you on a 64 bit machine with a 32 bit compiler?
{
    printf("char=%d, int=%d, long=%d", sizeof(char), sizeof(int), sizeof(long));
}
a) char=4, int=4, long=4
b) char=1, int=4, long=4
c) char=1, int=4, long=8
d) char=1, int=8, long=8
e) compilation error

7. Suppose you compile a code and send the binary to your friends computer (Both your computers have different configuration etc).
Will it run ? When will it not run?