### ReduceFration and CommonDemoninator Help

Hey i have no clue what to put in the ReduceFration and CommonDemoninator sections.

I know that you call the gcd function for ReduceFration and lcm function for CommonDenominator.

Should be easy few lines of code but I'm a Beginner!

Here's the code:

 ```#include using namespace std; int gcd(int x,int y) { int t; t = x % y; while (t != 0) { x = y; y = t; t = x % y; } return y; } int lcm(int x,int y) { int ans, cnt; if (x > y) { cnt = x; } else { cnt = y; } ans = 0; while (ans == 0) { if (cnt % x == 0 && cnt % y == 0) { ans = cnt; } else { cnt++; } } return ans; } void ReduceFraction(int &num,int &den) { // Missing function goes here! } void CommonDenominator(int &num1, int &den1, int &num2, int &den2) { // Missing function goes here! } void main() { int num1, den1, num2, den2, newnum, newden; char slash1, slash2, op; cout << "\nFraction Calculator\n\n"; cout << "Add, subtract, multiply & divide - positive fractions only\n"; cout << "Enter '0/0 + 0/0' to quit.\n"; // Input will be assumed to be in correct form for simplification // Input data before loop in case they want to exit right away cout << "\n> "; cin >> num1 >> slash1 >> den1 >> op >> num2 >> slash2 >> den2; while (num1 + den1 + num2 + den2 > 0) { // Reduce both fractions to keep integers as small as possible ReduceFraction(num1, den1); ReduceFraction(num2, den2); switch (op) { case '+': // Find common denominator and add CommonDenominator(num1,den1,num2,den2); newnum = num1 + num2; newden = den1; break; case '-': // Find common denominator and subtract CommonDenominator(num1,den1,num2,den2); newnum = num1 - num2; newden = den1; break; case '*': // Multiply numerators and multiply denominators newnum = num1 * num2; newden = den1 * den2; break; case '/': // Invert and multiply newnum = num1 * den2; newden = den1 * num2; } // Reduce the answer to lowest terms ReduceFraction(newnum, newden); // Output the results cout << num1 << "/" << den1 << " " << op << " "; cout << num2 << "/" << den2 << " = "; cout << newnum << "/" << newden << endl; // Input data for next iteration of loop cout << "\n> "; cin >> num1 >> slash1 >> den1 >> op >> num2 >> slash2 >> den2; } } ```
closed account (D80DSL3A)
Duplicate of http://www.cplusplus.com/forum/beginner/98532/
Yes, I wasn't sure which forum to post in.
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