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# Untitled

a guest Jan 24th, 2020 68 Never
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1. #include <iostream>
2.
3. int gcd(int a, int b) {
4.     return b ? gcd(b, a % b) : a;
5. }
6.
7. void findGcd(int* couples, int numCouples) {
8.     for (int i = 0; i < numCouples; i++) {
9.         printf("GCD of the %d%s%d%s", (i + 1), " couple: ", gcd(couples[2 * i], couples[2 * i + 1]), ".\n");
10.     }
11. }
12.
13. int getNumber(int minValue, int maxValue) {
14.     int number;
15.     bool isCorrect;
16.     do {
17.         isCorrect = true;
18.         printf("\nEnter: ");
19.         scanf_s("%d", &number);
20.         if (number > maxValue || number < minValue) {
21.             printf("Your value will be more than %d%s%d%s", minValue, " and less than ", maxValue, ". Try again.");
22.             isCorrect = false;
23.         }
24.     } while (!isCorrect);
25.     return number;
26. }
27.
28.
29. void getCouples(int* couples, int numCouples) {
30.     for (int i = 0; i < numCouples; i++) {
31.         printf("Enter %d %s", (i + 1), "couple.");
32.         printf("\nEnter the first number of this couple.");
33.         couples[2 * i] = getNumber(1, INT_MAX);
34.         printf("Enter the second number of this couple.");
35.         couples[2 * i + 1] = getNumber(1, INT_MAX);
36.     }
37. }
38.
39. int main() {
40.     int couples[50];
41.     printf("Enter the number of couples.");
42.     int numCouples = getNumber(1, 25);
43.     printf("Now enter couples.");
44.     getCouples(couples, numCouples);
45.     findGcd(couples, numCouples);
46. }
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