C Articles

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Check the number is Armstrong or not using C

Mandalika
Mandalika
Updated on 15-Mar-2026 11K+ Views

An Armstrong number (also known as a narcissistic number) is a number that equals the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because 1³ + 5³ + 3³ = 153. Syntax number = sum of (each digit ^ number_of_digits) Algorithm To check if a number is an Armstrong number − Count the number of digits in the given number Calculate the sum of each digit raised to the power of total digits Compare this sum with the ...

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Using iterative function print the given number in reverse order in C language

Mandalika
Mandalika
Updated on 15-Mar-2026 458 Views

In C programming, reversing a number means printing its digits in reverse order. This can be achieved using an iterative approach with a while loop that extracts digits from right to left and builds the reversed number. Syntax int reverse(int number) { int reversed = 0; while (number > 0) { reversed = reversed * 10 + number % 10; number = number / 10; } ...

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Printing the numbers in reverse order using Division and modulo operators using C

Mandalika
Mandalika
Updated on 15-Mar-2026 1K+ Views

In C programming, we can reverse a number using division and modulo operators without using any predefined functions. This approach extracts individual digits from a number and reconstructs them in reverse order. Syntax int digit = number % 10; // Extract last digit int remaining = number / 10; // Remove last digit How It Works The logic to reverse a number using mathematical operators is − Modulo operator (%): Extracts the last digit of a number Division operator (/): Removes the last digit by integer division Extract digits ...

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Differentiate the modulo and division by using C Programming language?

Mandalika
Mandalika
Updated on 15-Mar-2026 6K+ Views

In C programming, the modulo and division operators are fundamental arithmetic operators that work with integers but produce different results from the same operands. Modulo (%) − Returns the remainder after integer division. Division (/) − Returns the quotient (whole number result) of integer division. Syntax result = dividend % divisor; // Modulo operation result = dividend / divisor; // Division operation Example 1: Basic Modulo and Division This example demonstrates the difference between modulo and division operators − #include int main() { ...

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Write a C program to perform 3X3 matrix operations

Mandalika
Mandalika
Updated on 15-Mar-2026 2K+ Views

In C, we can perform various operations on a 3x3 matrix such as calculating row sums, column sums, and diagonal sums. This program demonstrates how to read a 3x3 matrix and compute these basic operations. Syntax int matrix[3][3]; // 3x3 matrix declaration // Row sum: matrix[i][0] + matrix[i][1] + matrix[i][2] // Column sum: matrix[0][j] + matrix[1][j] + matrix[2][j] // Main diagonal: matrix[0][0] + matrix[1][1] + matrix[2][2] // Anti-diagonal: matrix[0][2] + matrix[1][1] + matrix[2][0] Algorithm Step 1: Declare a 3x3 matrix Step 2: Read 9 numbers from user Step 3: Store numbers in ...

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Write a C program of library management system using switch case

Mandalika
Mandalika
Updated on 15-Mar-2026 10K+ Views

A library management system in C allows you to store and manage book information efficiently. This program uses a structure to store book details and implements a menu-driven interface using switch-case statements for different operations. Syntax struct library { char bookname[50]; char author[50]; int noofpages; float price; }; Algorithm Step 1: Declare a structure to hold book data members Step 2: Declare variables for loop control and book counting Step 3: Use switch case to handle different ...

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Write a C program for electing a candidate in Elections by calling functions using Switch case

Mandalika
Mandalika
Updated on 15-Mar-2026 5K+ Views

This C program demonstrates how to create an electronic voting system using functions and switch case statements. The program allows users to cast votes for candidates and view the vote count results. Syntax switch(expression) { case constant1: // statements break; case constant2: // statements break; default: ...

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How to align the output using justificationsin C language?

Mandalika
Mandalika
Updated on 15-Mar-2026 21K+ Views

In C, justifications in printf() statements allow you to format and align output data in various ways. By using width specifiers and alignment flags, you can create well-formatted tables and organized output displays. Syntax printf("%-width format_specifier", value); // Left justification printf("%width format_specifier", value); // Right justification (default) To implement left justification, insert a minus sign (-) before the width value. Without the minus sign, the output is right-justified by default. Example 1: Left Justification with Fixed Width This example demonstrates left justification using %-15s for strings and %-15d ...

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Write C program to calculate balance instalment

Mandalika
Mandalika
Updated on 15-Mar-2026 888 Views

In C programming, calculating loan balance installments involves computing the remaining amount after each monthly payment, considering compound interest. This program demonstrates how to calculate the outstanding balance after making monthly payments on a loan with interest. Syntax balance = principal + (principal * (interest_rate / 100) / 12); remaining_balance = balance - monthly_payment; Formula for Interest Calculation The monthly interest calculation follows this approach − Monthly Interest: principal * ((annual_rate / 100) / 12) Balance with Interest: principal + monthly_interest Remaining Balance: balance_with_interest - monthly_payment Example: Loan Balance Calculator ...

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C program on calculating the amount with tax using assignment operator

Mandalika
Mandalika
Updated on 15-Mar-2026 3K+ Views

In C programming, calculating tax on an amount is a common application of arithmetic and assignment operators. This program demonstrates how to compute the total amount by adding a specific tax percentage to the original amount. Syntax total_amount = original_amount + (original_amount * tax_rate); Problem Write a C Program to enter the amount in dollars and then display the amount by adding 18% as tax. Solution Let's consider the restaurant person adding 18% tax to every bill of the customer. The logic applied to calculate tax is − value = ...

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