58 + Interview Questions in GENERAL QA IN PROGRAMMING Page 2 InterviewSolution

51.	Given the following code fragment:i=2;start:cout<<i;i+=2;if(i<51) goto start;cout<<"\nThank You";Rewrite the above code using a while loop.
Answer» int i=2; while(i<51) { cout<<i; i+=2; } cout<<"\nThank You";

51.

Given the following code fragment:i=2;start:cout<<i;i+=2;if(i<51) goto start;cout<<"\nThank You";Rewrite the above code using a while loop.

Answer»

int i=2;

while(i<51)

{

cout<<i;

i+=2;

}

cout<<"\nThank You";

Discussion

52.	Name the header files that shall be needed for the following code:void main() {char Text[]="Computer";cout<<setw(15)<<Text;}
Answer» (i) iomanip.h for setw() (ii) iostream.h for cout

52.

Name the header files that shall be needed for the following code:void main() {char Text[]="Computer";cout<<setw(15)<<Text;}

Answer»

(i) iomanip.h for setw()

(ii) iostream.h for cout

Discussion

53.	Go through C++ code show below, and find out the possible output or outputs from the suggested Output Options(i) to (iv0. Also, write the least value and highest value, which can be assigned to the variable MyNum.#include<iostream.h>#include<stdlib.h>void main() {randomize();int MyNum,Max=5;MyNum=20+random(Max);for(int N=Mynum;N<=25;N++)cout<<C<<"";}(i) 202122232425(ii) 22232425(iii) 2324* (iv) 2122232425
Answer» (ii) 222324*25 Minimum possible value = 20, Maximum possible value = 24

53.

Go through C++ code show below, and find out the possible output or outputs from the suggested Output Options(i) to (iv0. Also, write the least value and highest value, which can be assigned to the variable MyNum.#include<iostream.h>#include<stdlib.h>void main() {randomize();int MyNum,Max=5;MyNum=20+random(Max);for(int N=Mynum;N<=25;N++)cout<<C<<"";}(i) 202122232425(ii) 22232425(iii) 2324* (iv) 2122232425

Answer»

(ii) 22*23*24*25

Minimum possible value = 20,

Maximum possible value = 24

Discussion

54.	Find the syntax error(s), if any, in the following program:(i) #include<iostream.h>main() {int x[5],y,z[5]for(i=0;i<=5;i++){x[i]=i;z[i]=i+3;y=z;x=y;}}(ii) #include<iostream.h>void main(){int x,y;cin>>x;for(x=0;x<5;++x)cout y else cout<<x<<y;}(iii) #include<iostream.h>void main(){int R;W=90;while W>60{ R=W-50;switch(W){20:cout<<"Lower Range"<<endl;30:cout<<"Middel Range"<<endl;20:cout<<"Higher Range"<<endl;}}}(iv) Rewrite the following program after removing all the syntax error(s), if any#include <iostream.h>void main() {int X[]={60, 50, 30, 40},Y;Count=4;cin>>Y;for(I=Count-1;I>=0,I--)switch(I){ case 0:case 2:cout<<YX[I]<<endl;breakcase1:case 3:cout>>Y+X[I];}}(v) Rewrite the following program after removing all the syntax error(s), if any.#include<iostream.h>void main(){int P[]={90, 10, 24, 15},Q;Number=4;Q=9;for(int I=Number-1;I>=0,I--)switch(I){ case 0:case 2:cout>>P[I]*Q<<endl;break;case1:case 3:cout<<P[I]+Q;}}
Answer» (i) Will encounter a following syntax error(s): The variable ‘i’ is not declared. There should be semicolon after the declaration statement if int x[5]. (ii) There is a syntax error in cout statement. (iii) Will encounter a following syntax error(s): There should be a ‘,’ between R and W instead of ‘;’ in declaration statement.  There should be a parenthesis in ‘while’ statement. There is missing a use of ‘case’ keyword in switch statement. (iv) #include<iostream.h> void main(){ int X[]={60, 50, 30, 40},Y,Count=4; cin>>Y; for(int I=Count-1;I>=0;I^--) switch(I) { case 0: case 1: case 2:cout<<YX[I]<<endl;break; case 3:cout<<Y+X[I];break; } } (v) #include<iostream.h> void main() { int P[]={90, 10, 24, 15},Q,Number=4; Q=9; for(int I=Number-1;I>=0;I^--) switch(I) { case 0: case 1: case 2:cout<<P[I]Q<<endl; break; case 3:cout<<P[I]+Q; break; } }

54.

Find the syntax error(s), if any, in the following program:(i) #include<iostream.h>main() {int x[5],y,z[5]for(i=0;i<=5;i++){x[i]=i;z[i]=i+3;y=z;x=y;}}(ii) #include<iostream.h>void main(){int x,y;cin>>x;for(x=0;x<5;++x)cout y else cout<<x<<y;}(iii) #include<iostream.h>void main(){int R;W=90;while W>60{ R=W-50;switch(W){20:cout<<"Lower Range"<<endl;30:cout<<"Middel Range"<<endl;20:cout<<"Higher Range"<<endl;}}}(iv) Rewrite the following program after removing all the syntax error(s), if any#include <iostream.h>void main() {int X[]={60, 50, 30, 40},Y;Count=4;cin>>Y;for(I=Count-1;I>=0,I--)switch(I){ case 0:case 2:cout<<YX[I]<<endl;breakcase1:case 3:cout>>Y+X[I];}}(v) Rewrite the following program after removing all the syntax error(s), if any.#include<iostream.h>void main(){int P[]={90, 10, 24, 15},Q;Number=4;Q=9;for(int I=Number-1;I>=0,I--)switch(I){ case 0:case 2:cout>>P[I]*Q<<endl;break;case1:case 3:cout<<P[I]+Q;}}

Answer»

(i) Will encounter a following syntax error(s):

The variable ‘i’ is not declared.
There should be semicolon after the declaration statement if int x[5].

(ii) There is a syntax error in cout statement.

(iii) Will encounter a following syntax error(s):

There should be a ‘,’ between R and W instead of ‘;’ in declaration statement. 
There should be a parenthesis in ‘while’ statement.
There is missing a use of ‘case’ keyword in switch statement.

(iv) #include<iostream.h>

void main(){

int X[]={60, 50, 30, 40},Y,Count=4;

cin>>Y;

for(int I=Count-1;I>=0;I^--)

switch(I)

{ case 0:

case 1:

case 2:cout<<Y*X[I]<<endl;break;

case 3:cout<<Y+X[I];break;

}

(v) #include<iostream.h>

void main() {

int P[]={90, 10, 24, 15},Q,Number=4;

Q=9;

for(int I=Number-1;I>=0;I^--)

switch(I)

{ case 0:

case 1:

case 2:cout<<P[I]*Q<<endl;

break;

case 3:cout<<P[I]+Q;

break;

}

Discussion

55.	Given the following code fragment: if(a==0)cout<<"Zero";if(a==1)cout<<"One";if(a==2)cout<<"Two";if(a==3)cout<<"Three";Write an alternative code (using if) that saves on number on compressions.
Answer» #include<iostream.h> void main() { int a; cout<<"enter a:"; cin>>a; if(a==0) cout<<"Zero"; else if(a==1) cout<<"One"; else if(a==2) cout<<"Two"; else if(a==3) cout<<"Three"; else cout<<"other than 0,1,2,3";

55.

Given the following code fragment: if(a==0)cout<<"Zero";if(a==1)cout<<"One";if(a==2)cout<<"Two";if(a==3)cout<<"Three";Write an alternative code (using if) that saves on number on compressions.

Answer»

#include<iostream.h>

void main() {

int a;

cout<<"enter a:";

cin>>a;

if(a==0)

cout<<"Zero";

else if(a==1)

cout<<"One";

else if(a==2)

cout<<"Two";

else if(a==3)

cout<<"Three";

else cout<<"other than 0,1,2,3";

Discussion

56.	Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include <iostream.h>void main() {Present=25,Past=35;Assign(Present;Past);Assign(Past);} void Assign(int Default1,Default2=30){Default1=Default1+Default2;cout<<Default1>>Default2;}
Answer» #include <iostream.h> void Assign(int Default1,int Default2=30); void main() { clrscr(); int Present=25,Past=35; Assign(Present,Past); Assign(Present); getch(); } void Assign(int Default1,int Default2) { Default1=Default1+Default2; cout<<Default1<<Default2; }

56.

Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include <iostream.h>void main() {Present=25,Past=35;Assign(Present;Past);Assign(Past);} void Assign(int Default1,Default2=30){Default1=Default1+Default2;cout<<Default1>>Default2;}

Answer»

#include <iostream.h>

void Assign(int Default1,int Default2=30);

void main() {

clrscr();

int Present=25,Past=35;

Assign(Present,Past);

Assign(Present);

getch();

}

void Assign(int Default1,int Default2)

{

Default1=Default1+Default2;

cout<<Default1<<Default2;

}

Discussion

57.	Find the output of the following program:#include<iostream.h>void main() {int A = 5,B = 10;for(int I=1;I<=2;I++){cout<<"Line1"<<A++<<"&"<<B-2<<endl;cout<<"Line2"<<++B<<"&"<<A+3<<endl;}}
Answer» Output: Line 15&8 Line 211&9 Line 1679 Line 212&10

57.

Find the output of the following program:#include<iostream.h>void main() {int A = 5,B = 10;for(int I=1;I<=2;I++){cout<<"Line1"<<A++<<"&"<<B-2<<endl;cout<<"Line2"<<++B<<"&"<<A+3<<endl;}}

Answer»

Output:

Line 15&8

Line 211&9

Line 1679

Line 212&10

Discussion

58.	Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include <iostream.h>void main() {One=10,Two=20;Callme(One;Two);Callme(Two);}void Callme(int Arg1,int Arg2=20){ Arg1=Arg1+Arg2cout<<Arg1<<Arg2;}
Answer» #include <iostream.h> void Callme(int Arg1,int Arg2=20); void main() { int One=10,Two=20; Callme(One;Two); Callme(Two); } void Callme(int Arg1,int Arg2=20) { Arg1=Arg1+Arg2 cout<<Arg1<<Arg2;

58.

Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include <iostream.h>void main() {One=10,Two=20;Callme(One;Two);Callme(Two);}void Callme(int Arg1,int Arg2=20){ Arg1=Arg1+Arg2cout<<Arg1<<Arg2;}

Answer»

#include <iostream.h>

void Callme(int Arg1,int Arg2=20);

void main() {

int One=10,Two=20;

Callme(One;Two);

Callme(Two);

}

void Callme(int Arg1,int Arg2=20)

{

Arg1=Arg1+Arg2

cout<<Arg1<<Arg2;

Discussion

Explore topic-wise InterviewSolutions in .

Given the following code fragment:i=2;start:cout&lt;&lt;i;i+=2;if(i&lt;51) goto start;cout&lt;&lt;"\nThank You";Rewrite the above code using a while loop.

Name the header files that shall be needed for the following code:void main() {char Text[]="Computer";cout&lt;&lt;setw(15)&lt;&lt;Text;}

Given the following code fragment: if(a==0)cout&lt;&lt;"Zero";if(a==1)cout&lt;&lt;"One";if(a==2)cout&lt;&lt;"Two";if(a==3)cout&lt;&lt;"Three";Write an alternative code (using if) that saves on number on compressions.

Find the output of the following program:#include&lt;iostream.h&gt;void main() {int A = 5,B = 10;for(int I=1;I&lt;=2;I++){cout&lt;&lt;"Line1"&lt;&lt;A++&lt;&lt;"&amp;"&lt;&lt;B-2&lt;&lt;endl;cout&lt;&lt;"Line2"&lt;&lt;++B&lt;&lt;"&amp;"&lt;&lt;A+3&lt;&lt;endl;}}

Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include &lt;iostream.h&gt;void main() {One=10,Two=20;Callme(One;Two);Callme(Two);}void Callme(int Arg1,int Arg2=20){ Arg1=Arg1+Arg2cout&lt;&lt;Arg1&lt;&lt;Arg2;}

Given the following code fragment:i=2;start:cout<<i;i+=2;if(i<51) goto start;cout<<"\nThank You";Rewrite the above code using a while loop.

Name the header files that shall be needed for the following code:void main() {char Text[]="Computer";cout<<setw(15)<<Text;}

Given the following code fragment: if(a==0)cout<<"Zero";if(a==1)cout<<"One";if(a==2)cout<<"Two";if(a==3)cout<<"Three";Write an alternative code (using if) that saves on number on compressions.

Find the output of the following program:#include<iostream.h>void main() {int A = 5,B = 10;for(int I=1;I<=2;I++){cout<<"Line1"<<A++<<"&"<<B-2<<endl;cout<<"Line2"<<++B<<"&"<<A+3<<endl;}}

Rewrite the following program after removing all the syntactical error(s), if any. Underline each correction.#include <iostream.h>void main() {One=10,Two=20;Callme(One;Two);Callme(Two);}void Callme(int Arg1,int Arg2=20){ Arg1=Arg1+Arg2cout<<Arg1<<Arg2;}