What output will be generated by the given code segment if: Line 1 is replaced by auto int a = 1; Line 2 is replaced by register int a = 2;

Question

Consider the following c code segment: 

int a, b, c = 0;

void prtFun(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 segment if:

Line 1 is replaced by auto int a = 1; 

Line 2 is replaced by register int a = 2; 

Answer 1

Correct option is 

Static local variables: Scope is limited to function/block but life time is entire 51. program .

Automatic local variables: Storage allocated on function entry and automatically deleted or freed when the function is exited.

Register variables: Same as automatic variables except that the register variables will not have addresses Hence may not take t he address of a register variable.