Minor fixes for example inputs

examples/fem/fem.mc

@@ -16,7 +16,7 @@ int main()
 	if (Vbat < 0.0) {
 		print("Please plug the battery in the right way");
 		print_nl();
-		return;
+		return 1;
 	}
 
 	print("Resistor value: ");
@@ -28,7 +28,7 @@ int main()
 	if (R < 0.0 || C < 0.0) {
 		print("Part values must be positive");
 		print_nl();
-		return;
+		return 1;
 	}
 
 	print("Time step: ");
@@ -47,7 +47,7 @@ int main()
 	if (dt < 0.0 || iter < 0) {
 		print("Cowardly refusing to go backwards in time");
 		print_nl();
-		return;
+		return 1;
 	}
 
 	Vc = 0.0;

examples/leibniz_pi/leibniz_pi.mc

@@ -1,12 +1,10 @@
 float kth(float k)
 {
-
     return 1.0 / (2.0 * k + 1.0);
 }
 
 int main()
 {
-
     print("Please enter a number: ");
 
     float sign;

examples/lucas_number/lucas_number.mc

@@ -1,15 +1,14 @@
-void lucas_number (int x, int y, int num){
+void lucas_number (int x, int y, int num)
+{
     int z;
     z=0;
- while(num >= x)
- {
+    while(num >= x) {
         print_int(x);
         print(", ");
         z=x+y;
         x=y;
         y=z;
     }
-
 }
 
 int main()

examples/mandelbrot/mandelbrot.mc

@@ -1,18 +1,14 @@
 float transform_x(float x)
 {
 	float fx;
-
 	fx = x;
-
 	return (-2.0) + ((1.0) - (-2.0)) * (fx / 80.0);
 }
 
 float transform_y(float y)
 {
 	float fy;
-
 	fy = y;
-
 	return ((1.0) - ((1.0) - (-1.0)) * (fy / 50.0)) * 2.0;
 }
 

examples/number_guessing/number_guessing.mc

@@ -1,4 +1,5 @@
 /* Test booleans and greater/smaller comparisons */
+
 void guessNumber(int number, int max) {
     bool success;
     success = false;
@@ -27,4 +28,3 @@ int main() {
     guessNumber(test, 10);
     return 0;
 }
-    

examples/prime/prime.mc

@@ -1,10 +1,9 @@
-int is_prime(int n){
-
+int is_prime(int n)
+{
 	int i;
 	i = 2;
 	int mod;
-    while (i < n/2)
-    {
+	while (i < n / 2) {
 		mod = n - (n / i) * i;
 		if (mod == 0) {
 			return 0;

examples/sorting_network/sorting_network.mc

@@ -1,4 +1,5 @@
 /* this example sorts 4 numbers like in an sorting network */
+
 void sort(int a, int b, int c, int d) {
 	int tmp;
 	if(a > c) { tmp = c; c = a; a = tmp; }