First commit

IUT/Info1/TD/Exercices/9.1_PGCD/fonction.cpp

@@ -0,0 +1,13 @@
+#include "fonction.h"
+
+unsigned int pgcd(unsigned int a, unsigned int b) {
+    unsigned int echange;
+
+    while (b != 0) {
+        echange = b;
+        b = a % b;
+        a = echange;
+    }
+
+    return a;
+}