Placement Papers - DeShaw

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DESHAW Placement Paper Pattern (Aptitude Test)

Posted By : A.Rajesh Rating : +21, -6

Deshaw Placement Paper Pattern (Aptitude Test)


THERE ARE THREE SECTIONS:

 SECTION A: APPITUDE TEST 20 BITS
 SECTION B: C BITS 20 BITS
 SECTION C: 1 QUESTION (NOT A BIT)
 IT IS LONG ANSWER  THE QUESTION IS:FIND THE NEXT PERMUTATION IN  LEXICOGRAPHIC ORDER FROM THE GIVEN PERMUTATION

 NOTE: MAXIMUM QUESTIONS ARE FROM OLD QUESTION PAPERS


 SECTION A:

 1. THERE WERE 750 PEOPLE WHEN THE FIRST SONG WAS
 SUNG. AFTER EACH
 SONG 50 PEOPLE ARE LEAVING THE HALL. HOWMANY SONGS
 ARE SUNG TO MAKE
 THEM ZERO?

 ANS:16

 SECTION B:

 1. typedef struct{
 char *;
 nodeptr next;
 } * nodeptr;
 what does nodeptr stand for?


 2. 2 oranges,3 bananas and 4 apples cost Rs.15 . 3
 ornages 2 bananas
 1 apple costs Rs 10. what is the cost of 3 oranges,
 3 bananas and
 3 apples ANs Rs 15.


 3. int *x[](); means
 expl: Elments of an array can't be functions.

 4. struct list{
 int x;
 struct list *next;
 }*head;
 the struct head.x =100
 above is correct / wrong


Expl: Before using the ptr type struct variable we
 have to give memory
 to that .
 And also when ever the struct variable is ptr then
 we access the
 members
 by "->" operator.




 5.o/p=?
 int i;
 i=1;
 i=i+2*i++;
 printf(%d,i);
 ans: 4

 6. FILE *fp1,*fp2;
 fp1=fopen("one","w")
 fp2=fopen("one","w")
 fputc('A',fp1)
 fputc('B',fp2)
 fclose(fp1)
 fclose(fp2)}
 a.error b. c. d.
 ans: no error. But It will
 over writes on same
 file.


 7.#include
 char *f()
 {char *s=malloc(8);
 strcpy(s,"goodbye")}
 main()
 {
 char *f();
 printf("%c",*f()='A');
 o/p=?


 8) #define MAN(x,y) (x)>(y)?(x):(y)
 { int i=10;j=5;k=0;
 k= MAX(i++,++j)
 printf(%d %d %d %d,i,j,k)}


 9) a=10;b=5; c=3;d=3;
 if(a
 printf(%d %d %d %d a,b,c,d)
 else printf("%d %d %d %d a,b,c,d);

 : .............................................
 10. what is o/p
 #include
 show(int t,va_list ptr1)
 {
 int a,x,i;
 a=va_arg(ptr1,int)
 printf("
%d",a)
 }
 display(char)
 {int x;
 listptr;
 va_star(otr,s);
 n=va_arg(ptr,int);
 show(x,ptr);
 }
 main()
 {
 display("hello",4,12,13,14,44);
 }
 a) 13 b) 12 c) 44 d) 14


 11.main()
 {
 printf("hello");
 fork();
 }


 12.main()
 {
 int i = 10;
 printf(" %d %d %d
", ++i, i++, ++i);
}

 13.#include
 main()
 {
 int *p, *c, i;
 i = 5;
 p = (int*) (malloc(sizeof(i)));
 printf("
%d",*p);
 *p = 10;
 printf("
%d %d",i,*p);
 c = (int*) calloc(2);
 printf("
%d
",*c);
 }

 14.#define MAX(x,y) (x) >(y)?(x):(y)
 main()
 {
 int i=10,j=5,k=0;
 k= MAX(i++,++j);
 printf("%d..%d..%d",i,j,k);
 }

 15.#include  
 main()
 {
 enum _tag{ left=10, right, front=100, back};
 printf("left is %d, right is %d, front is
 %d, back is
 %d",left,right,front,back);
 }

 16.main()
 {
 int a=10,b=20;
 a>=5?b=100:b=200;
 printf("%d
",b);
 }




 17.#define PRINT(int) printf("int = %d ",int)
 main()
 {
 int x,y,z;
 x=03;y=02;z=01;
 PRINT(x^x);
 z<<=3;PRINT(x);
 y>>=3;PRINT(y);    

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