Reverse number in C Programming Language | How to reverse a number in C programming @codeinfarm
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Reverse Number in C - Explained
In computer programming, there are often tasks that involve manipulating numbers in various ways. One such task is to reverse a number. That is, given a number, we want to obtain its reverse. For example, if the number is 1234, the reverse would be 4321.
In this article, we will discuss how to reverse a number in the C programming language. We will first discuss the concept of a number's digits and how to extract them. Then we will show how to reverse the digits to get the reverse number.
Extracting Digits
To reverse a number, we first need to extract its digits. We can do this by repeatedly dividing the number by 10 and taking the remainder. The remainder will be the last digit of the number. We can then remove that digit by dividing the number by 10. We repeat this process until the number becomes 0. Each time we extract a digit, we can add it to another variable that will store the reversed number.
Reversing the Digits
Once we have extracted all the digits of the original number, we can reverse them to get the reverse number. To do this, we need to start with the last digit and move towards the first digit. We can do this by multiplying the reversed number by 10 and then adding the next digit. We repeat this process until we have added all the digits.
Code Example
Here is an example code that reverses a number in C:
#include stdio.h
int main()
{
int num, reversed = 0, remainder;
printf("Enter an integer: ");
scanf("%d", &num);
while (num != 0) {
remainder = num % 10;
reversed = reversed * 10 + remainder;
num /= 10;
}
printf("The reverse of the number is %d\n", reversed);
return 0;
}
Conclusion
Reversing a number is a simple task that can be accomplished by extracting its digits and then reversing them. In this article, we have discussed how to do this in the C programming language. The code example provided can be used as a starting point for implementing a number reversal algorithm in your own programs.
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