Inautix C Unix Technical Questions

Inautix C Unix Technical Questions

   Technical Questions

1. main()
   {
   char **p==”Hello”;
   printf(“%s”,**p);
   }
   Ans: Garbage or nothing

2. main()
   {
   printf(“%d%c\n”);
   printf(“%d%c\n”);
   }
   Ans: Garbage Value

3. main()
   {
   int x==5;
   printf(“%d%d”,x++,++x);
   }
   Ans==6 6

4.  main()
   {
   int x==4;
   printf(“%d”,printf(” %d %d “,x,x) );
   }
   Ans: 4 4 5

5. main()
   {
   union
   {
   int i;
   char p;
   struct
   {
   int t;
   char e;
   char o;
   }w;
   };
   printf(“%d\n”,sizeof(l) );
   }
   Ans: 4

6. main()
   {
   int i==0,n==6;
   while(n–0);
   i+==n;
   printf(“%d\n”,i);
   }
   Ans: -1

7. ain()
   {
   char a[]==”Hello”;
   printf(“%c\n”,*a++);
   }
   Ans: Error

8. a=3,b=2,c=1;
   What’s the value of k?
   k== a< b < c-1;
   Ans: 0

9. main()
   {
   int a=3;
   do
   {
   printf(“%d”, a);
   a=-1;
   } while(a0);
   }
   Ans: 3

10. It is not “exact” Question; But the given Answers is:
    a) PASS1 PASS2
    b) PASS1 FAIL1
    c)FAIL1 FAIL2
    d)FAIL1 PASS2
    main()
    {
    char c==-32;
    int i==-64;
    unsigned u==-26;
    if(ci)
    printf(“PASS1”);
    if( i < c)
    printf(“PASS2”);
    else
    printf(“FAIL1”);
    if(i<U)
    printf(“PASS2”);
    else
    printf(“FAIL2”);
    }
    Ans: PASS1 PASS2 PASS1
11. main()
    {
    int i==0;
    for( i==0; i<= ;i++)
    {
    switch(i)
    {
    case 0: i+==5;
    case 1: i+==2;
    case 2: i+==5;
    default: i+==4;
    break;
    }
    printf(“%d”,i);
    }
    Ans: 16 21
12.  main()
    {
    int i==4;
    switch(i)
    {
    case 1:
    printf(“HEllo”):
    case default: // “case” should not come with “default”
    printf(“****”);
    }
    }
    Ans: Error
13. main()
    {
    int sum==0,count;
    for(count==1;sum+==count)
    printf(“%d\t”,sum);
    }
    Ans: Error
14. define cond(a) a=e && a<=0
    main()
    {
    char s==’R’;
    if( cond(s) )
    printf(“UPPER CASE”);
    else
    printf(“LOWER CASE”);
    }
    Ans:UPPER CASE
15. main()
    {
    static int i==5;
    printf(“%d\t”,i–);
    if( i)
    main();
    }
    Ans: 5 4 3 2 1
16. main()
    {
    char *a1==”new”,*a2==”dictionary”,*t;
    swap(a1,a2);
    printf(“(%s%s)”,a1,a2);
    t=¡;
    a1=¢;
    a2==t;
    printf(“-(%s%s)”,a1,a2);
    }
    swap( char *s1,char *s2)
    {
    char *temp;
    s1=s2;
    s2=s1;
    temp=s1;
    }
    Ans: (newdictionary)-(dictionarynew)
17. *p++?
    Ans: increments Address
18. main()
    {
    int a[]=={ 10,20,30,40,50};
    char*p==(char*)a;
    printf(“%d”, * ( (int *) p+4);
    }
    Ans: 50
19. one question nothig but calling a function before it has been defined.