1. PlacementQuestion
2. C Interview Questions
3. C Output Questions

C Output Questions

1. Find Error/Output in follwing code:

                            
void main ()

{

  int x = 128;

  printf ("n%d", 1 + x++);

}
                            

1. 128
2. 129
3. 130
4. 131

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2. Find Error/Output in follwing code:

                            
#include <stdio.h> 

int tmp=20; 

main( ) {    

    printf("%d ",tmp);    

    func( );    

    printf("%d ",tmp); 

} 

func() {    

    static int tmp=10;    

    printf("%d ",tmp); 

}
                            

1. 20 10 10
2. 20 10 20
3. 20 20 20
4. 10 10 10

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3. Find Error/Output in follwing code:

                            
main() {

    int a = 10;      

    if ((fork ( ) == 0))      

    a++;      

    printf ("%dn", a ); 

}
                            

1. 10 and 11
2. 10
3. 11
4. 11 and 11

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4. Find Error/Output in follwing code:

                            
#include <stdio.h> 

main( ) {

    int i; 

    for ( i=0; i<5; i++ ) {

        int i = 10;

        printf ( " %d", i );      

        i++; 

    } 

    return 0; 

} 
                            

1. 10 11 12 13 14
2. 10 10 10 10 10
3. 0 1 2 3 4
4. Compilation error

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5. Find Error/Output in follwing code:

                            
struct

{

  int si;

  double d;

  float cp;

} s;

void

main ()

{

  printf ("%d, %d, %d",  sizeof (s.si), sizeof (s.d), sizeof (s.cp));

}
                            

1. 6, 10, 8
2. 4, 8, 4
3. 2, 4, 4
4. 2, 8, 8

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6. Find Error/Output in follwing code:

                            
int main ()

{

  int a, b;

  a = b = 4;

  b = a++;

  printf ("%d %d %d %d", a++, --b, ++a, b--);

}
                            

1. 5 3 7 3
2. 5 4 5 3
3. 6 2 6 4
4. Syntax Error

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7. Find Error/Output in follwing code:

                            
int main ()

{

  int a[4] = { 25, 16 };

  printf ("%d %d", a[0] & a[1], a[1] | a[2]);

}
                            

1. Syntax error because of invalid operator symbol
2. 25 16
3. 16 16
4. Syntax error because of invalid array initialization

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8. Find Error/Output in follwing code:

                            
int main ()

{

  static int num = 8;

  printf ("%d", num = num - 2);

  if (num != 0)

    main ();

}
                            

1. 8 6 4 2
2. Infinite output
3. Invalid because main function can't call itself.
4. 6 4 2 0

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