Verlet C code formatting changes

Author: berquist

contents/verlet_integration/code/c/verlet.c

@@ -6,55 +6,56 @@ void verlet(double *time, double pos, double acc, double dt) {
     *time = 0.0;
 
     while (pos > 0) {
-        (*time) += dt;
+        *time += dt;
         temp_pos = pos;
         pos = pos * 2 - prev_pos + acc * dt * dt;
         prev_pos = temp_pos;
     }
 }
 
-void stormer_verlet(double *time, double *vel, double pos, double acc, double dt) {
+void stormer_verlet(double *time, double *vel,
+                    double pos, double acc, double dt) {
     double prev_pos, temp_pos;
     prev_pos = pos;
     *vel = 0.0;
     *time = 0.0;
 
     while (pos > 0) {
-        (*time) += dt;
+        *time += dt;
         temp_pos = pos;
         pos = pos * 2 - prev_pos + acc * dt * dt;
         prev_pos = temp_pos;
 
-        (*vel) += acc * dt;
+        *vel += acc * dt;
     }
 }
 
-void velocity_verlet(double *time, double *vel, double pos, double acc, double dt) {
+void velocity_verlet(double *time, double *vel,
+                     double pos, double acc, double dt) {
     *vel = 0.0;
     *time = 0.0;
 
     while (pos > 0) {
-        (*time) += dt;
+        *time += dt;
         pos += (*vel) * dt + 0.5 * acc * dt * dt;
-        (*vel) += acc * dt;
+        *vel += acc * dt;
     }
 }
 
 int main() {
-    double time_v;
-    double time_sv, vel_sv;
-    double time_vv, vel_vv;
-
-    verlet(&time_v, 5.0, -10, 0.01);
-    stormer_verlet(&time_sv, &vel_sv, 5.0, -10, 0.01);
-    velocity_verlet(&time_vv, &vel_vv, 5.0, -10, 0.01);
+    double time, vel;
 
+    verlet(&time, 5.0, -10, 0.01);
     printf("Time for Verlet integration is: %lf\n",
-           time_v);
+           time);
+
+    stormer_verlet(&time, &vel, 5.0, -10, 0.01);
     printf("Time and velocity for Stormer Verlet integration is: %lf, %lf\n",
-           time_sv, vel_sv);
+           time, vel);
+
+    velocity_verlet(&time, &vel, 5.0, -10, 0.01);
     printf("Time and velocity for velocity Verlet integration is: %lf, %lf\n",
-           time_vv, vel_vv);
+           time, vel);
 
     return 0;
 }

contents/verlet_integration/verlet_integration.md

@@ -81,7 +81,7 @@ Here's what it looks like in code:
 {% sample lang="cpp" %}
 [import:20-36, lang:"c_cpp"](code/c++/verlet.cpp)
 {% sample lang="c" %}
-[import:16-30, lang:"c_cpp"](code/c/verlet.c)
+[import:16-31, lang:"c_cpp"](code/c/verlet.c)
 {% sample lang="java" %}
 [import:21-40, lang:"java"](code/java/verlet.java)
 {% sample lang="py" %}
@@ -138,7 +138,7 @@ Here is the velocity Verlet method in code:
 {% sample lang="cpp" %}
 [import:38-49, lang:"c_cpp"](code/c++/verlet.cpp)
 {% sample lang="c" %}
-[import:32-41, lang:"c_cpp"](code/c/verlet.c)
+[import:33-43, lang:"c_cpp"](code/c/verlet.c)
 {% sample lang="java" %}
 [import:43-57, lang:"java"](code/java/verlet.java)
 {% sample lang="py" %}