GATE IT - C Programming and Computer Science Fundamentals

Question 1 Multiple Choice (Single Answer)

Which model includes user participation in software development?

Waterfall model
Iterative enhancement model
Spiral model
RAD model
Prototype model

Question 2 Multiple Choice (Single Answer)

Which of the following is a header file for the inbuilt function iniscr ( ) in C language?

conio.h
dos.h
maths.h
curses.h
stdio.h

Question 3 Multiple Choice (Single Answer)

Consider the grammar:
G1=({S,S1,S2},{a,b},S,P), with the following productions:
P:S → S1bc,S1→ S1bc|S2,S2 →b
Give the regular language for the above.

L(((bc*)c))
L((bc(b+bc)*(c+cc))
L(bbc(bc)*)
L(b+bcc)bcc(c+b)
L(bcb*(b+c)bcc*)

Question 4 Multiple Choice (Single Answer)

Which of the following is true about virtual base class?

Multilevel, multiple and hierarchical inheritance’s instances are not involved.
No such concept like virtual base class exists only functions can be made virtual.
It creates only one instance of the super class.
It helps in creating redundant data, when we want to achieve data security.
Both 2 and 3

Question 5 Multiple Choice (Single Answer)

Consider :
72ⁿ+n² ≤ 62ⁿfor n ≥ 4
Find the complexity for the given equation.

O(2<sup style="font-family:">n)
Θ(n<sup style="font-family:">2)
ɸ(6*2<sup style="font-family:">n)
Ω(2<sup style="font-family:">n)
Both 1 and 4

Question 6 Multiple Choice (Single Answer)

What is the output of the given program snippet in C language?
main()
{
int x=10,a=20;
clrscr(); x=(a==!!a);
printf(%d,x&&a); getch();
}

0
1
10
20
No output

Question 7 Multiple Choice (Single Answer)

How many minimum inputs would be required to get 37 output lines in a decoder?

5
7
6
8
4

Question 8 Multiple Choice (Single Answer)

What is the output of the given program snippet in C Language?
main()
{
int a=0.5,c=0.5;
float b=2,d=4;
if(b=d&&a++<=c) printf(This is true);
else
printf(This is false);
}

Compilation error: Incompatible types
This is false
This is true
Runtime exception
None of these

Question 9 Multiple Choice (Single Answer)

What will be the output of the following code snippet in C language?
main()
{
int j=0,i;
clrscr();
for(printf(nValue is not initialized here.);
j++;)
{
if(j>10) break;
else
{
i=j*2; printf(%d,i);
}
}
getch();
}

Infinite loop
Syntax error
Value is not initialized here
24681012141618
1820

Question 10 Multiple Choice (Single Answer)

What will be the result of the given code snippet in C language?
main()
{
int x=1;
clrscr(); for(;x++;x%10?0:1)
{
printf(%d,x*x);
}
getch();
}

Compilation error
No output
149162536496481
49162536496481
Infinite loop

Question 11 Multiple Choice (Single Answer)

What will be the output of the following code snippet in C language?
Assume that all preprocessor directives are correct.
main()
{
int a=11;
clrscr(); a++ +=10;
printf("%d",a); getch();
}

22
23
12
Compilation error: Lvalue required in function main
Compilation error: Rvalue required

Question 12 Multiple Choice (Single Answer)

Consider the following code.
What will be the values of a, x, y and z?
main()
{
int x=10,y=20,z=30,a=0;
clrscr();
a=(x+=y)||(y+=z);
getch();
}

a=0, x=10, y=20, z=30
a=1, x=30, y=50, z=30
a=0, x=30, y=50, z=30
a=1, x=30, y=20, z=30
a=1, x=10, y=50, z=30

Question 13 Multiple Choice (Single Answer)

What will be the output of the following code snippet?
main()
{
int a=11,b; clrscr();
for(a%10;a++);
printf(%d,a%10?0:1);
getch();
}

111111111
1111111110
0000000001
000000000
0000000000

Question 14 Multiple Choice (Single Answer)

What will be the output of the following code snippet?
main()
{
int a=1,b=1;
clrscr();
a=++a||++b&&++a;
printf(a=%d, b=%d,a,b);
getch();
}

a=3, b=2
a=2, b=1
a=1, b=1
a=1, b=2
a=2, b=2

Question 15 Multiple Choice (Single Answer)

Consider the below given code:
main()
{
int i=0; //line 1
clrscr();
printf(%d,i); i++;
if(i!=10)
main();
getch();
}
The above code snippet will run in an infinite loop.
What resolution shall be applied in order to terminate the loop as well?

int static i=0;
const int i=0;
declaring variable i as global
static int i=0;
none of these

Question 16 Multiple Choice (Single Answer)

What will be the output of the following code snippet?
main()
{
int num=1;
clrscr();
for(j=1;j<=6;j++)
{
for(i=j;i>=1;i--)
{
for(k=1;k<=i;k++)
num*=k;
}
}
printf(The num is: %d,num);
getch();
}

1
6912
0
216
720

Question 17 Multiple Choice (Single Answer)

Consider the given number system.
(123)₁₀= (234)_?
What will be the base for 234?

5
6
9
7
10

Question 18 Multiple Choice (Single Answer)

Where is the file pointer fp pointing to after below mentioned statement?
fseek(fp, 49, sizeof (Variable type),0);

Begining of the file
End of the file
49^th element of the file
0^th element of the file
Beginning of the 50^th record

Question 19 Multiple Choice (Single Answer)

What will be the output of the code snippet?
int funct(a,b)
int a,b;
{
return a*b;
}
void main()
{
int i=135,k;
clrscr();
k=funct(!++i,!i++);
printf(i=%d,k=%d,i,k);
getch();
}

i=137, k=0
i=137, k=18225
i=135, k=18769
i=137, k=18769
i=135, k=0

Question 20 Multiple Choice (Single Answer)

What will be the output of the following code snippet?
main()
{
clrscr();
char ch[]=Hello;
switch(ch)
{
case world: printf(World);
break;
case Hello: printf(Hello);
break;
default: printf(default.);
}
getch();
}

Compilation error: switch selection expression must be of integral type
Hello
Compilation error: constant expression required
Compilation error: duplicate case
Options 1,3 and 4

GATE IT - C Programming and Computer Science Fundamentals

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