IBM Placement Paper - C/C++ and APTITUDE TEST Question And Answers

IBM Previous Years Solved Sample Placement Papers

1. Output of the following program is:

   main()
   {
       int i = 0;
       for(i = 0; i < 20; i++)
       {
           switch(i)
           case 0: i += 5;
           case 1: i += 2;
           case 5: i += 5;
           default: i += 4;
           break;
       }
       printf("%d,", i);
   }
           

   (a) 0,5,9,13,17

   (b) 5,9,13,17

   (c) 12,17,22

   (d) 16,21 (Ans)

   (e) Syntax error

2. What is the output of the following program:

   main()
   {
       char c = -64;
       int i = -32;
       unsigned int u = -16;
       if(c > i)
       {
           printf("pass1,");
           if(c) printf("pass2");
           else printf("Fail2");
       }
       else printf("Fail1");
       if(i) printf("pass2");
       else printf("Fail2");
   }
           

   (a) Pass1,Pass2

   (b) Pass1,Fail2

   (c) Fail1,Pass2 (Ans)

   (d) Fail1,Fail2

   (e) None of these

3. In the process table entry for the kernel process, the process ID value is:

   (a) 0 (Ans)

   (b) 1

   (c) 2

   (d) 255

   (e) It does not have a process table entry

4. Which of the following API is used to hide a window?

   (a) ShowWindow (Ans)

   (b) EnableWindow

   (c) MoveWindow

   (d) SetWindowPlacement

   (e) None of the above

5. What will the following program do?

   void main()
   {
       int i;
       char a[] = "String";
       char *p = "New String";
       char *Temp;
       Temp = a;
       a = malloc(strlen(p) + 1);
       strcpy(a, p); // Line number: 9
       p = malloc(strlen(Temp) + 1);
       strcpy(p, Temp);
       printf("(%s, %s)", a, p);
       free(p);
       free(a);
   } // Line number 15
           

   (a) Swap contents of p & a and print: (New string, string)

   (b) Generate compilation error in line number 8 (Ans)

   (c) Generate compilation error in line number 5

   (d) Generate compilation error in line number 7

   (e) Generate compilation error in line number 1

6. In the following code segment, what will be the result of the function?

   Value of x , value of y
   {
       unsigned int x = -1;
       int y;
       y = ~0;
       if(x == y)
           printf("same");
       else
           printf("not same");
   }
           

   (a) same, MAXINT, -1 (Ans)

   (b) not same, MAXINT, -MAXINT

   (c) same, MAXUNIT, -1

   (d) same, MAXUNIT, MAXUNIT

   (e) not same, MAXINT, MAXUNIT

7. What will be the result of the following program?

   char *gxxx()
   {
       static char xxx[1024];
       return xxx;
   }
   
   main()
   {
       char *g = "string";
       strcpy(gxxx(), g);
       g = gxxx();
       strcpy(g, "oldstring");
       printf("The string is : %s", gxxx());
   }
           

   (a) The string is : string

   (b) The string is : Oldstring (Ans)

   (c) Run time error/Core dump

   (d) Syntax error during compilation

   (e) None of these