C PROGRAMMING 2

What is an example of iteration in C?

• for

• while

• do-while

• all of the mentioned

Functions in C Language are always _________

• Internal

• External

• Both Internal and External

• External and Internal are not valid terms for functions

Which function is used to concatenate two strings in C?

• 1. concat()

• 1. cat()

• 1. stringcat()

• 1. strcat()

Which is the correct syntax to declare an array in C?

• 1. data_type array_name[array_size];

• 1. data_type array_name{array_size};

• 1. data_type array_name[];

• 1. All of the above

What will be the output of the following C program?

#include <stdio.h>

int main()

{

int x[5] = { 10, 20, 30 };

printf("%ld", sizeof(x)/sizeof(x[0]));

return 0;

}

• 1. 3

• 4

• 5

• 6

What is a function in C?

• 1. User defined data type

• 1. Block of code which can be reused

• 1. Declaration syntax

• 1. None of these

Which of these is not a valid parameter passing method in C?

• 1. Call by value

• 1. Call by reference

• 1. Call by pointer

• 1. All of these

Before using a pointer variable, it should be ___.

• 1. Declared

• 1. Initialized

• 1. Both A. and B.

• 1. None of the above

What will be the output of the following C code?

#include <stdio.h>

int main()

{

int x = 10, ptr;

ptr = &x;

ptr = 20;

printf("%d", x);

}

• 10

• 20

• 30

• error

What is the correct syntax to declare pointer to pointer i.e., double pointer?

• 1. type **(pointer_name);

• 1. type (pointer_name);

• 1. type *&pointer_name;

• 1. type **pointer_name;