How can the member functions in a container be accessed?

Pick the odd one out among the following options.

Let x be an integer which can take a value of 0 or 1. The statement 

if(x = =0) 

x = 1;

 else

 x = 0;

 is equivalent to which one of the following?

What is the output of the following C code?

int main()

{

  int v1=0, v2=20;

  char n1=1, n2=10;

  if(v1, v2, n1, n2)

    printf("CSE");

}

What is the output of the following program?

int increment(int *i)

{

  return (*i + 1);

}

int main()

{

  int i = 10, j;

  j = increment(&i);

  printf("%d", j);

}

How can the heap be protected from affecting the memory?

What is the output of the following C code?

#include<stdio.h>

int main()

{

       int i=2;

       if (i==0)

      {

             printf("Hello");

             exit();

      }

      main(i-2);

}

What is the output of the following code?

#include <stdio.h>

int add(int, int);

int main()

{

  int x=2, y=3, sum;

  sum = add(x, y);

  printf("%d", sum);

}

int add(int p, int r)

{

  int a;

  a = p + r;

  return a;

}

What happens when the function call operator '()' is overloaded?