Q1 . What is the use of constant Keyword in C?

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SOLUTION

The const in C is a type qualifier

They are used to define constant variables whose values cannot be modified

Example- const int a=5

Q2 . What are the storage classes in C?

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SOLUTION

The storage classes are the ones that decide the type of variables like the scope etc.Some of the storage classes are

>Static

>External

>Register

Q3 . What are Bitwise operators in C?

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SOLUTION

Bitwise oerators are the ones that act on the operands at bit level.

Some examples are Bitwise AND,OR.

Bitwise AND would be 1 AND 1 would be 1

1 AND 0 would be 0

Q4 . What is ternary operators in C?

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SOLUTION

?: is a ternary operator.It is a conditional operator.

K?A:B

when the condition K is true the output would be A else it will be B.

Q5 . What is the precendence of arithmatic operators in C?

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SOLUTION

The precedance of operators from left to right is

*/+ -

Q6 . What is an infinite loop?

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SOLUTION

It is a loop that does not terminate ; For example

i=1;while (i>0){i++;}

for(;;)

Q7 . What are the intial default values of various data types?

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SOLUTION

Whenver the variables are intialised in C they have some default values .Like char has

float has 0

integer has 0

Q8 . What is preprocessor?

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SOLUTION

The preprocessor in C help in inclusion of header files macros etc.

some header files are

some preprocessor are #include,#define

Q9 . what is the precedence of local and global variables?

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SOLUTION

In a flow of a program a local variable has precedence over global variables if both of them coexist in the same scope.

Q10 . What are pointers in C?

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SOLUTION

Pointers are variables that contain the address of other variables. Example of pointer int *p; p=&x;

now p has the address of X

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