Portability – Platform independent language. Modularity – Possibility to break down large programs into small modules. Flexibility – The possibility to a programmer to control the language. Speed – C comes with support for system programming and hence it is compiling and executes with high speed when compared with… Read More »What are the key features in the C programming language?
NULL is used to indicate that the pointer doesn’t point to a valid location. Ideally, we should initialize pointers as NULL if we don’t know their value at the time of declaration. Also, we should make a pointer NULL when memory pointed by it is… Read More »What is NULL pointer?
1. To get address of a variable 2. For achieving pass by reference in C: Pointers allow different functions to share and modify their local variables. 3. To pass large structures so that complete copy of the structure can be avoided. 4. To implement “linked” data structures like linked lists and binary… Read More »When should we use pointers in a C program?
#include <stdio.h> int main(void) { if (printf(“Hello World”)) { } }
Scope of a variable is the part of the program where the variable may directly be accessible. In C, all identifiers are lexically (or statically) scoped.
Declaration of a variable/function simply declares that the variable/function exists somewhere in the program but the memory is not allocated for them. But the declaration of a variable/function serves an important role. And that is the type of the variable/function. Therefore, when a variable is… Read More »What is the difference between declaration and definition of a variable/function.
The below program shows how to use array and store student’s details and fetch details. Here we are using for each loop which is used to iterate throughout entire array element. Example import java.util.Scanner; class FindGrade { //get roll number and marks of student and… Read More »Write a java program which generates student grade report in console. Take student roll number and marks (out of 100) of 5 courses from user. Calculate the percentage and display grade of the student. Use appropriate control statements.
The below program performs arithmetic and bitwise operations based on number entered by user. Scanner class is used to take input from the user, which is inside java.util.Scanner class. System.in is used to use input classes. Example import java.util.Scanner; class ArithmeticOperation { //arithmetic operation on… Read More »Demonstrate concept of Arithmetic & Bitwise Operators with a java program. Operands to be considered as per the operators entered by the user.
In this program, we iterate the loop and print Fizz when the current number is multiple of 3, and print Bizz when the current number is multiple of 5, and print Fizz-Bizz when the current number is multiple of 3 and 5. The below example… Read More »Write a Java program using class that prints the numbers 1 to 50. For all multiples of 3 print “Fizz” and for all multiples of 5 print “Bizz”. For multiples of both 3 and 5 print “Fizz-Bizz”.