C Storage Classes and Type Qualifiers

Question 31

Consider the following code:

C++

int a, b, c = 0;

void prtFun(void);

void main()
{
    static int a = 1;
    prtFun();
    a += 1;
    prtFun() printf("\n %d %d ", a, b);
}

void prtFun(void)
{
    static int a = 2;
    int b = 1;
    a += ++b;
    printf("\n %d %d ", a, b);
}

What output will be generated by the given code d\\segment if: 
Line 1 is replaced by “auto int a = 1;” 
Line 2 is replaced by “register int a = 2;” (GATE CS 2012) 

• 3 1
  
  4 1
  
  4 2
  
  

• 4 2
  
  6 1
  
  6 1
  
  

• 4 2
  
  6 2
  
  2 0
  
  

• 4 2
  
  4 2
  
  2 0