When should a type cast be used?
A:There are two situations in which to use a type cast. The first use is to change the type of an operand to an arithmetic operation so that the operation will be performed properly.
The second case is to cast pointer types to and from void * in order to interface with functions that expect or return void pointers. For example, the following line type casts the return value of the call to malloc() to be a pointer to a foo structure.
struct foo *p = (struct foo *) malloc(sizeof(struct foo));
Showing posts with label c interview question bank. Show all posts
Showing posts with label c interview question bank. Show all posts
c c++ Interview questionbank
c c++ Interview questionbank
1-what is modular programming? Give advantage with the of diagram and example?
2-what is call by reference? Explain using example.
3-explain between switch statement .what is the difference between if and switch statement ?
4-write a c program to calculate the sum of digit of a number given by the user using recursion ?
5-How to a pointer initialized ?explain it ?
6-how does function definition differ from function declaration?
7- What is storage class in c? Explain type of storage class.
8-write a function to find the sum of digits of a given number?
9-differentiate between p and *p?
10-write a program to find the gcd(greatest common dividing ) of two number . using recursion?
11-Differentiate between the standard functions and user defined function?
12-what is call by value? Explain using example.
13-what is recursion?
14-explain nested loop with example?
15-write a program to check whether a number is a krisnamurty number or not. A Krishnamurty number is one whose sum of factorial of digits equals the number.
16-write a program of Fibonacci series using recursion.
17-what is pointer? Why are they important? Explain the features of pointer.
18-explain the relation between an array and a pointer.
19-deffine type of pointer? and also give example .
20-write a program to check whether a number is prime number or not?
21-what is purpose of if statement? Describe the different forms of if statement.
22-whatis the purpose of while and do while loops?
23-diffrence between call by value and call by reference? give example
24-write a program to print the second largest number among a list ?
25-differentitate between a for loop and a while loop ?
26-write a program to find the mean of two integer number. Using call by value .
27-which arithmetic operation are possible with pointer ?
28-explain function and type of function?
29- what is the result of adding an integer to a pointer ? and give example ?
30-write a program using pointer to read in an array of integer and print its elements in reverse order.
31- what is an operating system? Explain its components.
32- write short notes on: (1) UNIX (2) WINDOWS
33- explain the structure of a C program in brief.
34- what do you understand by stepwise refinement? Explain SDLC in brief.
35- write a program to reverse a given integer number and check whether it is a palindrome . output the given number with suitable messages.
36- what is storage classes? Explain automatic and register storage class in brief.
37- write a program to find sum of odd and even numbers from 1 to N. Output the computed sums on two different lines with suitable heading.
38- write syntaxes of if-else ladder, for, while and do-while loop with their flow charts.
39- explain the scope rule. Also explain the advantages of modular programming.
40- Write a C program that shows the concept of call by value and cll by reference.
41- WAP in C to read two strings and concatenate them (without using library function) .
42-Perform the following conversions: (i) (6820)10=()2 (ii) (CDFE)16 = ()2 (iii) (2489)10 = ()8 (iv) (1010.001)16 =()10
43- WAP in C to read a string and write it in reverse order.
44- WAP in C to find the roots of quadratic equation using function and switch statement.
45- Explain stack operation in detail. Support your answer by code segments.
46- what do you mean by linked list? Explain any one operation on linked list with a program.
47-what do you mean by dynamic memory allocation? Explain its function.
48- What is the use of macros? Explain conditional compilation in brief.
49- Explain difference between array and structure with the help of a program.
50- explain searching and sorting in brief supported by code segment for each.
1-what is modular programming? Give advantage with the of diagram and example?
2-what is call by reference? Explain using example.
3-explain between switch statement .what is the difference between if and switch statement ?
4-write a c program to calculate the sum of digit of a number given by the user using recursion ?
5-How to a pointer initialized ?explain it ?
6-how does function definition differ from function declaration?
7- What is storage class in c? Explain type of storage class.
8-write a function to find the sum of digits of a given number?
9-differentiate between p and *p?
10-write a program to find the gcd(greatest common dividing ) of two number . using recursion?
11-Differentiate between the standard functions and user defined function?
12-what is call by value? Explain using example.
13-what is recursion?
14-explain nested loop with example?
15-write a program to check whether a number is a krisnamurty number or not. A Krishnamurty number is one whose sum of factorial of digits equals the number.
16-write a program of Fibonacci series using recursion.
17-what is pointer? Why are they important? Explain the features of pointer.
18-explain the relation between an array and a pointer.
19-deffine type of pointer? and also give example .
20-write a program to check whether a number is prime number or not?
21-what is purpose of if statement? Describe the different forms of if statement.
22-whatis the purpose of while and do while loops?
23-diffrence between call by value and call by reference? give example
24-write a program to print the second largest number among a list ?
25-differentitate between a for loop and a while loop ?
26-write a program to find the mean of two integer number. Using call by value .
27-which arithmetic operation are possible with pointer ?
28-explain function and type of function?
29- what is the result of adding an integer to a pointer ? and give example ?
30-write a program using pointer to read in an array of integer and print its elements in reverse order.
31- what is an operating system? Explain its components.
32- write short notes on: (1) UNIX (2) WINDOWS
33- explain the structure of a C program in brief.
34- what do you understand by stepwise refinement? Explain SDLC in brief.
35- write a program to reverse a given integer number and check whether it is a palindrome . output the given number with suitable messages.
36- what is storage classes? Explain automatic and register storage class in brief.
37- write a program to find sum of odd and even numbers from 1 to N. Output the computed sums on two different lines with suitable heading.
38- write syntaxes of if-else ladder, for, while and do-while loop with their flow charts.
39- explain the scope rule. Also explain the advantages of modular programming.
40- Write a C program that shows the concept of call by value and cll by reference.
41- WAP in C to read two strings and concatenate them (without using library function) .
42-Perform the following conversions: (i) (6820)10=()2 (ii) (CDFE)16 = ()2 (iii) (2489)10 = ()8 (iv) (1010.001)16 =()10
43- WAP in C to read a string and write it in reverse order.
44- WAP in C to find the roots of quadratic equation using function and switch statement.
45- Explain stack operation in detail. Support your answer by code segments.
46- what do you mean by linked list? Explain any one operation on linked list with a program.
47-what do you mean by dynamic memory allocation? Explain its function.
48- What is the use of macros? Explain conditional compilation in brief.
49- Explain difference between array and structure with the help of a program.
50- explain searching and sorting in brief supported by code segment for each.
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