C Program.Thanks!

Problem 9: Difference of Large Number (30%) In C/C++, the range for a long long int is [-9223372036854775808, 9223372036854775807]. If you need to compute a integer out of range, you should create your own Large Number operations. The simple steps are listed below. You can follow the steps to complete this question: 1. Read numbers from the input, and record in arrays. (You can store numbers every three digits or every one digit.) 2. Because the first number is not necessarily relatively large, determine which of the two numbers is greater. 3. Subtract the smaller number from the bigger number, and do the subtraction from the lowest digit to the highest one. If the subtraction result of that digit is negative, take borrowing from the bigger digit. 4. Display the result on the screen. If the minuend is smaller, output _ first. Then, output the difference from the highest digit to the lowest digit. First line: number of lines For other lines: {the length of first number} {the length of second number} {first number} {second number} Input 3 21 21 123,123,123,123,123,123,123 789,789,789,789,789,789,789 21 21 123,123,123,123,123,123,123 123,123,123,123,123,123,123 21 21 789,789,789,789,789,789,789 789,789,789,789,789,789,788 Output -666,666,666,666,666,666,666 0 1