diff --git a/TP1/E3.c b/TP1/E3.c
index 5fc2afc..a21a308 100644
--- a/TP1/E3.c
+++ b/TP1/E3.c
@@ -1,11 +1,7 @@
 /* Affiche les solutions à une équation du second degré */
 #include <stdio.h>
 #include <math.h>
-
-struct Complex {
-	double a; // Partie réelle
-	double b; // Partie imaginaire
-};
+#include <complex.h>
 
 int main() {
 	double a, b, c;
@@ -21,11 +17,9 @@ int main() {
 		} else if (d > 0) {
 			printf("x1 = %lf; x2 = %lf", (-b+sqrt(d))/2*a, (-b-sqrt(d))/2*a);
 		} else { 
-			struct Complex z1,z2;
-			z1.a = z2.a = pow(b,2)/2*a;
-			z1.b = sqrt(-d)/2*a;
-			z2.b = -sqrt(-d)/2*a;
-			printf("z1 = %lf+i%lf; z2 = %lf+i%lf\n", z1.a, z1.b, z2.a, z2.b);
+            double complex z1 = pow(b,2)/2*a + sqrt(-d)/2*a * I;
+            double complex z2 = pow(b,2)/2*a - sqrt(-d)/2*a * I;
+			printf("z1 = %lf+i%lf; z2 = %lf+i%lf\n", creal(z1), cimag(z1), creal(z2), cimag(z2));
 
 		}
 	}