What is the output of the following program that compiles correctly? (Hint: When evaluating logical operators, the compiler ignores the remainder of the expression when it is sure of the final answer at any point of evaluation of the sub-expression - something often referred to as "short-circuit evaluation". This is a cryptic hint, I know, but enjoy unravelling it and discovering its meaning and implication!)

#include <stdio.h>

int main()
{
  int a= -2, b= -1, c = 0, d = 1, e = 2;
  int r1, r2;
  r2 = a++ || ++b || c++ || ++d || e;   
  r1 = a && b++ && ++c && d++ && ++e;  
  printf("%d %d %d\n", r1,r2,a+b+c+d+e);
  return 0;
}

The address operator (&) is used to tell the compiler to store data at an address. 

Which of these data types is/are detected by the

compiler as erroneous?

What would be the output of the following correctly compiling program?

#include <stdio.h>

int main()
{
  int a = 5;
  int b = !!a;
  printf("%d %d\n",a, b);
}

To compile a C

program named "hello.c" using a GNU C compiler, which command

would you use?

Given

the formula for motion

Which

of the following statements about the sizeof() operator in C is true?

Which of the following vim editor commands is correctly matched with its function?

What is the difference between rm and rmdir?