C programming Quiz

Who is the father of C language?

• Steve Jobs

• James Gosling

• Dennis Ritchie

• Rasmus Lerdorf

Answer explanation

Dennis Ritchie

Which of the following does not initialize ptr to null (assuming variable declaration of a as int a=0;)?

• int *ptr = &a;

• int *ptr = &a – &a;

• int *ptr = a – a;

• All of the mentioned

Answer explanation

int *ptr = &a;

What will be the output of the following C code?

#include <stdio.h>

int x = 0;

void main()

{

int *ptr = &x;

printf("%p\n", ptr);

x++;

printf("%p\n ", ptr);

}

• Same address

• Different address

• Compile time error

• Varies

What will be the output of the following C code?

#include <stdio.h>

void main()

{

int x = 0;

int *ptr = &x;

printf("%d\n", *ptr);

}

• Address of x

• Junk value

• 0

• Run time error

#include <stdio.h>

int main()

{

char str[10] = "hello";

char *str1 = "world";

strncat(str, str1, 9);

printf("%s", str);

}

• helloworld

• Undefined behaviour

• helloworl

• hellowor

Strcat() function adds null character

• Only if there is space

• Always

• Depends on the standard

• Depends on the compiler

Which keyword can be used for coming out of recursion?

• break

• return

• exit

• both break and return

The keyword ‘break’ cannot be simply used within _________

• do-while

• if-else

• for

• while

Which of the following are themselves a collection of different data types?

• string

• structures

• char

• all of the mentioned

Which operator connects the structure name to its member name?

• –

• <-

• .

• Both <- and