11th & 12th CS 2012 (Outside Delhi) Common Assignment

1(a)	Give the difference between the type casting and automatic type conversion. Also, give a suitable C++ code to illustrate both.		2
Ans	Type Casting Automatic Type Conversion Explicitly converting an expression of a given type into another type is known as type casting. Example: Float f=7.9; int c=(int)f; cout<<c; Output: 7 Implicitly converting data type to another by assigning to a variable of another type. Example: Char x=’A’; int c=x; cout<<c; Output: 65
(b)	Which C++ header file(s) are essentially required to be included to run/execute the following C++ source code (Note: Do not include any header file, which is/are not required): void main () {   char Text[]=”Something”; cout <<”Remaining SMS chars:“<<160-strlen (Text)<<endl; }	1
(c)	Find the output of the following program: #include<iostream.h> #include<conio.h>       typedef char str80[80]; void main()       { char *Notes; str80 str=”vR2GooD”; int L=6; Notes=str; while(L>=3) { str[L]=(isupper(str[L])?tolower(str[L]): cout<<Notes<<endl; L--; Notes++; } }	2
Ans	(Full 2 marks) (1½ marks) (1½ marks) (1½ marks) vR2Good R2GoOd 2GOOd gOOd v R 2 g vR2Good vR2GoOd vR2GOOd vR2gOOd vR2GooD R2GooD 2GooD GooD
(d)	Observe the following program and find out, which outputs out if (i) to (iv) will not be expected from the program? What will be the minimum and the maximum value assigned to the variable chance? #include<iostream.h> #include<stdlib.h> void main() { randomize(); int Arr[]={9,6},N; int Chance=random(2)+10; for(int C=0;C<2;C++) {    N=random(2);   cout<<Arr[N]+Chance<<”#”;  } }                  (i)9#6# (ii)19#17# (iii)19#16# (iv)20#16#
Ans	The outputs not expected from the program are (i),(ii)and(iv) Minimum value of chance=10 Maximum value of chance=11