11th & 12th CS 2015(Outside Delhi) Common Assignment

1.a	Find the correct identifiers out of the following , which can be used for naming Variable , Constants or Functions in a C++ program: For , while  , INT ,New , delete ,1stName , Add+Subtract , name1	2
Ans	For ,INT , New , name1
b	Observe the following program very carefully and write the name of those header file(s)  , which are essentially needed to compile and execute the following program successfully: typedef char STRING[80]; void main() {   STRING Txt[] = “We love Peace”;   int Count=0; while (Txt[Count]!=’\o’)    If(isalpha(Txt[Count]))      Txt[Count++]=’@’;    else      Txt[Count++]=’#’;   puts(Txt); }	1
Ans	ctype , stdio
c	Observe the following C++ code very carefully and rewrite it after removing any/all syntactical errors with each correction underlined. Note: Assume all required header files are already being included in the program. #Define float MaxSpeed=60.5; void main() {   int MySpeed   char Alert=’N’;   cin>>MySpeed;    if MySpeed>MaxSpeed       Alert=’Y’; cout<<Alert<<endline;  }	2
Ans	#define float MaxSpeed  60.5 ;         //Error 1,2,3 void main() {   int MySpeed  ;                                   //Error 4   char Alert=’N’;   cin>>MySpeed;    if (MySpeed>MaxSpeed)               //Error 5       Alert=’Y’; cout<<Alert<<endl;                           //Error 6  }
d	Write the output of the following C++ program code: Note: Assume all required header files are already being included in the program. void Location (int &X,int Y=4) {    Y+=2;    X+=Y; } void main() {    int PX=10,PY=2;    Location(PY);    cout<<PX<<”  ,  “<<PY<<endl;    Location(PX,PY);    cout<<PX<<” , “<<PY<<endl; }	2
Ans	10,8 20,8
e	Study the following program and select the possible output(s) from the option (i) to (iv) following it. Also, write the maximum and the minimum values that can be assigned to the variable VAL. Note: -Assume all required header files are already being included In the program. -random(n) function generates an integer between 0 and n-1. void main() {    randomize();    int VAL;    VAL=random(3)+2;    char GUESS[]=”ABCDEFGHIJK”;    for(int I=1;I<=VAL;I++)    {        for(int J=VAL;J++)                cout<<GUESS[J];        cout<<endl;    } } (i) (ii) (iii) (iv) BCDEFGH CDEFGH EFGH FGHI BCDEFGH CDEFGH EFGH FGHI EFGH FGHI EFGH FGHI	2
Ans	(ii) and (iii) Min Value of VAL =2 Max Value of VAL=4