I2 Technologies  Placement Paper   Technical - C & C++   -

I2 Technologies  Placement Paper   Technical - C & C++   -


  • Posted by  FreshersWorld 
    7 Jan, 2012

     

    i2 Technologies     

    Q1.Convert 0.9375 to binary
        a) 0.0111 
        b) 0.1011 
        c) 0.1111 
        d) none
    Ans. (c)

    Q2.( 1a00 * 10b )/ 1010 = 100 
        a) a=0, b=0 
        b)a=0, b=1 
        c) none
    Ans. (b)

    Q3. In 32 bit memory machine 24 bits for mantissa and 8 bits for exponent. To increase the range of floating point.
        a) more than 32 bit is to be there.
        b) increase 1 bit for mantissa and decrease 1 bit for exponent
        c) increase 1 bit for exponent and decrease one bit for mantissa

    Q4.In C,  "X ? Y : Z "  is equal to
        a) if (X==0) Y ;else Z
        b) if (X!=0) Y ;else Z
        c) if (X==0) Y ; Z
    Ans. (b)

    Q5. From the following program
               foo()
               int foo(int a, int b)
                {
                  if (a&b) return 1;
                  return 0;
                }

        a) if either a or b are zero returns always 0
        b) if both a & b are non zero returns always 1
        c) if both a and b are negative returns 0

    Q6. The  following function gives some error. What changes have to be made
                void ( int a,int b)
                    {
                        int t; t=a; a=b; b=t;
                    }
        a) define void as int and write return t
        b) change everywhere a to *a and b to *b

    Q7. Which of the following is incorrect
            a) if a and b are defined as int arrays then (a==b) can never be true
            b) parameters are passed to functions only by values
            c) defining functions in nested loops

    Q8.  include<stdio.h>
            void swap(int*,int*);
            main()
                {
                    int arr[8]={36,8,97,0,161,164,3,9}
                    for (int i=0; i<7; i++)
                        {
                    for (int j=i+1; j<8;j++)
                    if(arr[i]<arr[j]) swap(&arr[i],&arr[j]);
                        }
                }        
            void swap(int*x,int*y)
                {
                    int temp; static int cnt=0;
                    temp= *x;
                    *x=*y;
                    *y=temp;
                    cnt++;
                }
        What is cnt equal to

    a) 7 
    b) 15 
    c) 1 
    d) none of these

    Q9.      int main()
                    {
                        FILE *fp;
                        fp=fopen("test.dat","w");
                        fprintf(fp,'hello\n");
                        fclose(fp);
                        fp=fopen ("test.dat","w");
                        fprintf (fp, "world");
                        fclose(fp);
                        return 0;
                    }

    If text.dat file is already present after compiling and execution how many bytes does the file occupy ?

    a) 0 bytes 
    b) 5 bytes 
    c) 11 bytes 
    d) data is insufficient

    Q10.    f1(int*x,intflag)
                int *y;
                *y=*x+3;
                switch(flag)
                    {
                        case 0: 
                        *x=*y+1;
                        break;
                        case 1:
                        *x=*y;
                        break;
                        case 2:
                         *x=*y-1;   
                        break;
                    } 
            return(*y)
            
                main()
                {
                    *x=5;
                    i=f1(x,0); j=f1(x,1);
                    printf("%d %d %d ",i,j,*x);
                }
                
    What is the output?

    a) 8 8 8 
    b) 5 8 8 
    c) 8 5 8 
    d) none of these

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