May 28, 2025 - The simplest method to reverse a string is by extracting its digits one by one using (%) modulo and (/) division operator and form the number by rearrange them in the reverse. ... #include <stdio.h> // Iterative function to // reverse digits ...

#include <stdio.h> int main() { int n, reverse = 0, remainder, original; printf("Enter an integer: "); scanf("%d", &n); original = n; while (n != 0) { remainder = n % 10; reverse = reverse * 10 + remainder; n /= 10; } if (original % 10 == 0) { printf("Reversed number = %d", reverse); while ...

November 16, 2023 - Enter the number: 323441 Given number = 323441 Reverse of a Number is 144323 · Testcase 2: In this case, we are entering the number “42394” as input. ... Ask for the number as user input. In this case, as we are using for loop, it is essential to know the size of the number beforehand. Therefore we should make use of the log10 function to find the size of the number.

The revNum = revNum * 10 + remainder operation appends the last digit to the reversed number. The num /= 10 operation removes the last digit from num. The loop continues until num becomes 0. ... I have 15 years of experience in the IT industry, working with renowned multinational corporations.

March 26, 2026 - Base Case: When num is 0, it returns the reversed number, which is the final reversed result. ... The main() function takes input from the user and calls the reverse() function, passing the input number and an initial reversed value of 0.

June 10, 2024 - Inside the function: – We declare two integer variables: `reversedNum` to store the reversed number and `remainder` to store the remainder of the division operation. – Using a while loop, we extract each digit from the given number `num` ...

July 8, 2021 - In this C program to reverse a number using function, we defined a function findReverse() which return type is int and takes an int argument.

October 29, 2024 - Next, use a loop, say a while loop with a condition that num is greater than 0. ... Multiply reverseNum by 10 to shift the digits one place to the left. Add the last digit of num to reverseNum using the modulo operator (%) and division operator ...

February 26, 2024 - Explanation: In this approach, the reverse_number function reverses the input number by repeatedly extracting its last digit and building the reversed_number in a while loop. ... Note: When reversing a negative number in C, first convert it to positive by multiplying by -1, reverse it, then ...

April 21, 2026 - Explore 6 different ways to reverse a number in C language with detailed explanations and with code examples, Read now!

Answer (1 of 20): Just take the number input as string and simply reverse the string. This can be done in O(n). Just take two pointers, i=0 and j=strlen(s)-1. Then loop till i

For example, let's suppose a user enters a number, say 1234 (initialized to the num variable). Then here are the steps: Initially rev=0. It holds the reverse of the given number. Find the remainder of a given number using rem=num, rem=1234, or rem=4. Initialize the new value for the rev variable. That is, rev=(rev*10)+rem or rev=(0*10)+rem, or rev=0+4 or rev=4. Now divide the number by 10. That is, num = num/10 or num = 123. Check the number to see whether it is equal to zero or not.

To reverse or invert large numbers use long data type or long long data type if your compiler supports it, if you still have large numbers then use strings or other data structure. ... #include<stdio.h> int main() { int n, reverse = 0; printf("Enter a number to reverse\n"); scanf("%d",&n); ...

April 5, 2025 - #include <stdio.h> int rem, reverse ... to Reverse = "); scanf("%d", &number); reverse = reverse_number(number); printf("Reverse of entered number %d = %d\n", number, reverse); }...

That means we start adding the numbers from 1 to the given number... ... There are different kinds of the operators, such as arithmetic, relational, bitwise, assignment, etc., in the C programming language. The assignment operator is used to assign the value, variable and function to another ...

September 9, 2025 - Understand the algorithm of a C program to reverse a number. Learn how to reverse a number in C using different methods and loops with example code.📖 Read on!

April 13, 2023 - Time Complexity of reverse a number in C Language: O(log(N)) In this method, we will use a recursive function to apply the reverse number in which the function calls itself from its definition part.

To reverse or invert large numbers use long data type or long long data type if your compiler supports it, if you still have large numbers then use strings or other data structure. ... #include<stdio.h> int main() { int n, reverse = 0; printf("Enter a number to reverse\n"); scanf("%d",&n); ...

August 17, 2023 - 3. We use a `while` loop to iterate until the number becomes zero. 4. In each iteration, we find the remainder of the number when divided by 10 using the modulo operator `%`. 5. We then update the `reversedNumber` by multiplying it by 10 and adding the remainder. 6. We divide the number by 10 to remove the last digit in each iteration. 7. Finally, we return the `reversedNumber` once the loop is complete. 8. In the `main()` function, we prompt the user to enter a number, read it using `scanf()`, and store it in the `number` variable.

January 2, 2021 - #include <stdio.h> int main() { ... * 10) + (number % 10); // Remove last digit from number number /= 10; } printf("Reverse = %d", reversed); return 0; }...