In C language programming, we often need to deal with various data types and operations. Today, we will share an interesting and practical topic: how to extract the digit of a mobile phone. The mobile phone digits are the last few digits in the mobile phone number. Extracting these numbers can bring more possibilities to our program. In this article, we will introduce a concise and effective method to help you easily extract the digit of your mobile phone.
How to extract the digit of mobile phone in 3C language programming
- Mobile phone number structure
Before we start writing the code, let's understand the structure of a mobile number. Generally speaking, a mobile phone number consists of three parts: country code, area code and user number. The mantissa of the mobile phone we are concerned about is the last few digits of the user number. For example, for the mobile phone number +86 13800138000, the user number is 13800138000. We will learn how to extract and process these numbers.
- Extract the mantissa using remainder operation
In C language, we can use the remainder operator (%) to extract the mantissa. This operator returns the remainder in a division operation, which is exactly what we need. Let's look at a sample code:
#include
int main() {
int phoneNumber = 13800138000;
int lastDigits = phoneNumber % 10000;
printf(\Mobile phone digit is: %d\ lastDigits);
return 0;
}
In the above code, we use %operators to divide the mobile phone number by 10000 and get the remainder. By storing the result in lastDigitsa variable, we successfully extracted the mobile phone digit. In this example, the output would be 手机尾数是：8000.
- extensions
Now that we have successfully extracted the mobile phone digit, let's see how we can extend the functionality further. We can do some interesting operations with the extracted mantissa.
3.1 Mantissa calculation
First, we can do some simple calculations on the extracted mantissa. For example, we can calculate the square of a mantissa or the sum of two mantissas. Here is a sample code:
#include
int main() {
int phoneNumber = 13800138000;
int lastDigits = phoneNumber % 10000;
int square = lastDigits * lastDigits;
int sum = lastDigits + lastDigits;
printf(\The square of the mantissa is: %d\
\ square);
printf(\The sum of the mantissas is: %d\
\ sum);
return 0;
}
In the above code, we calculate the square of the mantissa and the sum of the two mantissas and print the result. You can perform more calculation operations based on actual needs.
3.2 Perform specific operations based on the mantissa
Another interesting application is to perform specific operations based on the mantissa. For example, we can decide whether to execute a certain block of code based on the parity of the mantissa. Here is a sample code:
#include
int main() {
int phoneNumber = 13800138000;
int lastDigits = phoneNumber % 10000;
if (lastDigits % 2 == 0) {
printf(\The mantissa is an even number.\n\ //Execute specific code here
} else {
printf(\The mantissa is an odd number.\n\ //Execute specific code here
}
return 0;
}
In the above code, we use conditional statements to determine the parity of the mantissa and execute different code blocks based on the results. You can design more complex operations based on actual needs.
- Summarize
Through this article, we learned how to extract the mobile phone digit in C language programming. We used the remainder operator to divide the mobile phone number by 10000 and obtain the remainder, successfully extracting the mantissa. Additionally, we show how to extend functionality to include mantissa calculations and perform specific operations based on the mantissa. I hope this article can help you handle mobile phone numbers in C language programming and bring more possibilities to your programs.
Now that you have mastered the method of extracting mobile phone digits, try applying it to your project! I believe this little trick will bring you more programming fun and creativity.
Part of the code is transferred from: https://www.wodianping.com/c/2023-08/253722.html