Comments

Post a Comment

Popular

C Program to Display Prime Numbers Between Two Intervals #33

Image
C Program to Display Prime Numbers Between Two Intervals Example to print all prime numbers between two numbers (entered by the user). This problem is solved using nested for loop and if...else statement. To understand this example, you should have the knowledge of following  C programming topics: C if...else Statement C Programming for Loop C Programming break and continue Statement Example #1: Display Prime Numbers Between two Intervals #include <stdio.h> int main () { int low , high , i , flag ; printf ( "Enter two numbers(intervals): " ); scanf ( "%d %d" , & low , & high ); printf ( "Prime numbers between %d and %d are: " , low , high ); while ( low < high ) { flag = 0 ; for ( i = 2 ; i <= low / 2 ; ++ i ) { if ( low % i == 0 ) { flag = 1 ; break ; } ...
Read more

C Programming Files I/O

Image
C Programming Files I/O There are a large number of functions to handle file I/O (Input Output) in C. In this tutorial, you will learn to handle standard I/O in C using fprintf(), fscanf(), fread(), fwrite(), fseek.and more. In C programming, file is a place on your physical disk where information is stored. Why files are needed? When a program is terminated, the entire data is lost. Storing in a file will preserve your data even if the program terminates. If you have to enter a large number of data, it will take a lot of time to enter them all. However, if you have a file containing all the data, you can easily access the contents of the file using few commands in C. You can easily move your data from one computer to another without any changes. Types of Files When dealing with files, there are two types of files you should know about: Text files Binary files 1. Text files Text files are the normal .txt files that you can easily create using Notepad ...
Read more

C Program to Find the Sum of Natural Numbers using Recursion #38

Image
C Program to Find the Sum of Natural Numbers using Recursion Example to find the sum of natural numbers by using a recursive function. To understand this example, you should have the knowledge of following C programming topics: C Programming User-defined functions C Programming Recursion The positive numbers 1, 2, 3... are known as natural numbers. The program below takes a positive integer from the user and calculates the sum up to the given number. You can  find the sum of natural numbers using loop  as well. However, you will learn to solve this problem using recursion here. Example: Sum of Natural Numbers Using Recursion #include <stdio.h> int addNumbers ( int n ); int main () { int num ; printf ( "Enter a positive integer: " ); scanf ( "%d" , & num ); printf ( "Sum = %d" , addNumbers ( num )); return 0 ; } int addNumbers ( int n ) { if ( n != 0 ) return n ...
Read more

C Programming Enumeration

Image
C Programming Enumeration In this article, you will learn to work with enumeration (enum). Also, you will learn where enums are commonly used in C programming. An enumeration is a user-defined data type that consists of integral constants. To define an enumeration, keyword  enum  is used. enum flag { const1, const2, ..., constN }; Here, name of the enumeration is  flag . And,  const1 ,  const2 ,....,  constN  are values of type  flag . By default,  const1  is 0,  const2   is 1 and so on. You can change default values of enum elements during declaration (if necessary). // Changing default values of enum enum suit { club = 0, diamonds = 10, hearts = 20, spades = 3, }; Enumerated Type Declaration When you create an enumerated type, only blueprint for the variable is created. Here's how you can create variables of enum type. enum boolean { false, true }; enum boolean check; ...
Read more

C Operators

Image
C Programming Operators C programming has various operators to perform tasks including arithmetic, conditional and bitwise operations. You will learn about various C operators and how to use them in this tutorial. An operator is a symbol which operates on a value or a variable. For example:  +  is an operator to perform addition. C programming has wide range of operators to perform various operations. For better understanding of operators, these operators can be classified as: Operators in C programming Arithmetic Operators Increment and Decrement Operators Assignment Operators Relational Operators Logical Operators Conditional Operators Bitwise Operators Special Operators C Arithmetic Operators An arithmetic operator performs mathematical operations such as addition, subtraction and multiplication on numerical values (constants and variables). Operator Meaning of Operator + addition or unary plus - subtraction or unary minus * multiplica...
Read more

C switch...case Statement

Image
C switch...case Statement In this tutorial, you will learn to write a switch statement in C programming (with an example). The  if..else..if  ladder allows you to execute a block code among many alternatives. If you are checking on the value of a single variable in  if...else...if , it is better to use  switch statement. The switch statement is often faster than nested  if...else  (not always). Also, the syntax of switch statement is cleaner and easy to understand. Syntax of switch...case switch (n) ​{ case constant1: // code to be executed if n is equal to constant1; break; case constant2: // code to be executed if n is equal to constant2; break; . . . default: // code to be executed if n doesn't match any constant } When a case constant is found that matches the switch expression, control of the program passes to the block of code associated with that case...
Read more

C Data Types

Image
C Programming Data Types In this tutorial, you will learn about data types and how to declare a variable in C programming. In C programming, variables or memory locations should be declared before it can be used. Similarly, a function also needs to be declared before use. Data types simply refers to the type and size of data associated with  variables  and functions. Data types in C Fundamental Data Types Integer types Floating type Character type Derived Data Types Arrays Pointers Structures Enumeration This tutorial will focus on fundamental data types. To learn about derived data types, visit the corresponding tutorial. int - Integer data types Integers are whole numbers that can have both positive and negative values but no decimal values. Example: 0, -5, 10 In C programming, keyword  int  is used for declaring integer variable. For example: int id; Here,  id  is a variable of type integer. You can de...
Read more