First commit

IUT/Info1/DS/trace.cpp

@@ -0,0 +1,31 @@
+#include <iostream>
+
+#include "trace.h"
+
+using namespace std;
+
+float Saisie_plusgrand(float min) {
+    float max;
+
+    do {
+        cout << "Saisir";
+        cin >> max;
+    } while (max <= min);
+
+    return max;
+}
+
+float f(float x) {
+    float y;
+    const float PI = 3.141565358979;
+
+    if (x < 0) {
+        y = ((float)3/7) * (cos(x) - 1);
+    } else if (x <= 2*PI) {
+        y = sin(x) * 2;
+    } else {
+        y = sin(3*x)/3;
+    }
+
+    return y;
+}