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Functions Questions

Home > Technical Aptitude > C Programming > Functions > General Questions
NA
SHSTTON
83
Solv. Corr.
125
Solv. In. Corr.
208
Attempted
0 M:58 S
Avg. Time

11 / 53

What is the output of 'C program'
#include<stdio.h> void main()
{
printf("%p",main);
}

ACompilation error

BGarbage Value

CSome address will be printed.

DNone of these

Answer: Option C

Explanation:

Function names are just addresses (just like array names are addresses). main() is also a function. So the address of function main will be printed. %p in printf specifies that the argument is an address. They are printed as hexadecimal numbers

Workspace

NA
SHSTTON
97
Solv. Corr.
94
Solv. In. Corr.
191
Attempted
0 M:54 S
Avg. Time

12 / 53

What will be output of the following "c" code?
#include<stdio.h> int main()
{
show();
return 0;
}
void show()
{
printf("I'm the greatest");
}

ACompier error: Type mismatch in redeclaration of show.

BI', the greatest

CLinker error

DNone of these

Answer: Option B

Explanation:

When the compiler sees the function show it doesn't know anything about it. So the default return type (ie, int) is assumed. But when the compiler sees the actual definition of show mismatch occurs since it is declared as void. Hence there will be a warning, if you have set treat warning as error then option A will be, else option B will be. Here Option B will be correct.

Workspace

NA
SHSTTON
67
Solv. Corr.
95
Solv. In. Corr.
162
Attempted
0 M:0 S
Avg. Time

13 / 53

What will be output of the following "c" code?
#include<stdio.h>
int main()
{
int i=_l_abc(10);
printf("%d\n",--i);
return 0;
}
int _l_abc(int i)
{
return(i++);
}

A10

B8

C9

DCompilation error

ENone of these

Answer: Option C

Explanation:

return(i++) it will first return i and then increments. i.e. 10 will be returned.

Workspace

NA
SHSTTON
27
Solv. Corr.
32
Solv. In. Corr.
59
Attempted
0 M:0 S
Avg. Time

14 / 53

What will be output of the following "c" code?
#include<stdio.h>
int main()
{
int i=1;
while (i<=5)
{
printf("%d",i);
if (i>2)
goto here;
i++;
}
} 
fun()
{
here:
printf("PP");
}

ACompiler error: label 'here' used but not defined

BPP

C1 2 PP

DNone of these

Answer: Option A

Explanation:

Labels have functions scope, in other words the scope of the labels is limited to functions. The label 'here' is available in function fun() Hence it is not visible in function main.

Workspace

NA
SHSTTON
99
Solv. Corr.
58
Solv. In. Corr.
157
Attempted
0 M:0 S
Avg. Time

15 / 53

What is the output of the following problem ?
#include<stdio.h>
int AX = 0;
int main()
{
int i=0;
i = abc();
printf("%d",i);
return 0;
}
abc()
{
AX = 1000;
return AX;
}

A0

B1000

C100

DGarbage Value

ECompilation Error

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
19
Solv. Corr.
45
Solv. In. Corr.
64
Attempted
0 M:0 S
Avg. Time

16 / 53

What will be output of the following "c" code?
#include<stdio.h>
int main(){
int i=3,val;
val=sizeof (f(i)+ +f(i=1)+ +f(i-1));
printf("%d %d",val,i);
return 0;
}
int f(int num){
return num*5;
}

A2 2

B3 3

C2 3

D15 0

ECompilation error

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
30
Solv. Corr.
26
Solv. In. Corr.
56
Attempted
0 M:0 S
Avg. Time

17 / 53

What will be output of the following "c" code?
#include<stdio.h>
int main(){
int a=1,x;
x=sq(++a)+sq(a++)+sq(a++);
printf("%d",x);
return 0;
}
int sq(int num){
return num*num;
}

A15

B16

C17

D18

ECompilation error

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
19
Solv. Corr.
33
Solv. In. Corr.
52
Attempted
0 M:0 S
Avg. Time

18 / 53

Choose the correct option.
In the following code in which order the functions would be called ? 

a = (fl (23, 14) * f2(12/4)) + f3();

Afl, f2, f3

Bf3, f2, fl

Cthe order may vary from compiler to compiler·

DNone of these

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
21
Solv. Corr.
32
Solv. In. Corr.
53
Attempted
0 M:0 S
Avg. Time

19 / 53

What error would the following function given on compilation?
#include<stdio.h>
int fun(int a, int b)
{
int a;
a=20;
return a;
}

void main()
{
int x = fun(1,3);
}

AMissing parentheses is return statment.

BThe function should be defined as mt fun (int a, int b)

CRedeclaration of a

DNone of these

Answer: Option C

Explanation:

Here is no explanation for this answer

Workspace

NA
SHSTTON
20
Solv. Corr.
43
Solv. In. Corr.
63
Attempted
0 M:14 S
Avg. Time

20 / 53

Choose the correct option.
How many  times  the following 'C' program would print 'Jamboree'?

#include<stdio.h>
void main()
{
printf ("\nJamboree");
main();
}

AInfinite number of times

B32767 times

C65535 times

DTill the stack doesn't overflow

Answer: Option D

Explanation:

Here is no explanation for this answer

Workspace

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