100 MCQ on C Programming

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Question: 41

#include "stdio.h"

char * f();
char a = 'a';

int main(int argc, char *argv[])
{	
char *temp = f();
printf("%&", temp);
return 0;
}

char *f()
{ 
return &a;
}

(A) a
(B) %
(C) Compilation Error
(D) Nothing is printed

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 42

#include "stdio.h"
char * f();
char a = 'a';

int main(int argc, char *argv[])
{	
char *temp = f();
printf("%s", temp);
return 0;
}

char *f()
{ return &a;
}

(A) a
(B) "a"
(C) nothing
(D) Compilation Error

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 43

#include <stdio.h>

int main(int argc, char *argv[]) {	

char str1 [] = "CppBuzz";
int a = 10;
char str2[12] ;
sprintf (str2, "%s-%d", str1, a) ;
printf ( "%s", str2 ) ; 

return 0;
}

(A) CppBuzz10
(B) CppBuzz-10
(C) CppBuzz 10
(D) Compilation Error

Compiler
Level: ExpertCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 44

#include "stdio.h"
#include "stdlib.h"

int main(int argc, char *argv[]) {	
    char temp[20];
    gcvt(23.45,2, temp);
    printf("%s", temp);
    return 0;
}

(A) .4
(B) 23
(C) 23.45
(D) 23.

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 45

#include "stdio.h"
#include "stdlib.h"

int main(int argc, char *argv[]) {	
    char temp[20];
    gcvt(23.45, 3, temp);
    printf("%s", temp);
    return 0;
}

(A) 0
(B) 23.5
(C) 23.450000
(D) 23.4

Compiler
Level: ExpertCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 46

#include "stdio.h"
#include "stdlib.h"

int main(int argc, char *argv[]) {	
	 char buffer[4];
	 itoa(123, buffer, 10);
	 printf("%s", buffer);
	 return 0;
}

(A) 1234
(B) 12340
(C) 123
(D) 0

Compiler
Level: ExpertCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 47

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[]) {	
	int a = atoi("100");
	printf("%d",a);
	return 0;
}

(A) 0
(B) 1
(C) 100
(D) 3

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 48

How many times cppbuzz.com is printed?

int main()
{

if(printf("cppbuzz.com"))
printf("cppbuzz.com");

return 0;
}

(A) 1
(B) 2
(C) 0
(D) Compilation Error

Compiler
Level: ExpertCateogry: conditional
[Posted by: Admin | Chicago, USA]

Question: 49

Is it possible to write C program which it print self?

(A) Yes
(B) No

Compiler
Level: ExpertCateogry: filehandling
[Posted by: Admin | Chicago, USA]

Question: 50

Is it possible to return two values by any function?

(A) Yes
(B) No

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 51

Is it possible to run program without main() function?

(A) Yes
(B) No

Compiler
Level: BeginnerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 52

How many main() function we can have in our project?

(A) 1
(B) 2
(C) No Limit
(D) Depends on Compiler

Compiler
Level: BeginnerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 53

What is sizeof() in C?

(A) Operator
(B) Function
(C) Macro
(D) None of these

Compiler
Level: ExpertCateogry: operators
[Posted by: Admin | Chicago, USA]

Question: 54

Is it true that a function may have several declaration, but only one definition.

(A) True
(B) False

Compiler
Level: PractitionerCateogry: function
[Posted by: Admin | Chicago, USA]

Question: 55

int main()
{
extern int i;
i = 20;
printf("%d", sizeof(i));
return 0;
}

(A) 20
(B) 0
(C) Undefined reference to i
(D) Linking Error

Compiler
Level: BeginnerCateogry: storgeclass
[Posted by: Admin | Chicago, USA]

Question: 56

Is the following statement a declaration or definition

extern int i;

(A) Declaration
(B) Definition

Compiler
Level: BeginnerCateogry: storgeclass
[Posted by: Admin | Chicago, USA]

Question: 57

int main()
{
     int x = 10;
	{
	    int x = 0;
	    printf("%d",x);
	}
    return 0;
}

(A) 10
(B) Compilation Error
(C) 0
(D) Undefined

Compiler
Level: BeginnerCateogry: loops
[Posted by: Admin | Chicago, USA]

Question: 58

int x = 10;

int main()
{
    int x = 0;
    printf("%d",x);
    return 0;
}

(A) 10
(B) 0
(C) Compilation Error
(D) Undefined

Compiler
Level: ExpertCateogry: datatype
[Posted by: Admin | Chicago, USA]

Question: 59

//This program is compiled on 32 bit DEV-C++ 
int main()
{

char *ptr1, *ptr2;
printf("%d %d", sizeof(ptr1), sizeof(ptr2));

return 0;
}

(A) 1 1
(B) 2 2
(C) 4 4
(D) Undefined

Compiler
Level: BeginnerCateogry: pointers
[Posted by: Admin | Chicago, USA]

Question: 60

Which programming language is more faster among these?

(A) Java
(B) PHP
(C) C
(D) Visual Basic

Compiler
Level: BeginnerCateogry: other
[Posted by: Admin | Chicago, USA]

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