X-Git-Url: https://hackdaworld.org/gitweb/?p=my-code%2Fbeginners.git;a=blobdiff_plain;f=pie.c;fp=pie.c;h=10396894f4f74fa5727824401cfb0768a9c2883a;hp=0000000000000000000000000000000000000000;hb=2473d40268a211cffc6bfbd8a19e66fce838c236;hpb=7d26cede0a579c4b9876f258fa629042f43e00d3

diff --git a/pie.c b/pie.c
new file mode 100644
index 0000000..1039689
--- /dev/null
+++ b/pie.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+int counter1;
+float counter2;
+int steps;
+int hits;
+float x;
+float x2;
+float y;
+float y2;
+float pie;
+char stepschar[100];
+
+int main()
+{
+
+   printf("\n");
+   printf("\n");
+   printf("Berechne Pie...\n");
+   printf("\n");
+   printf("Genauigkeit - [steps] ? : ");
+
+   fgets(stepschar, sizeof(stepschar), stdin);
+   sscanf(stepschar, "%d", &steps);
+
+   counter2 = 0;
+   hits = 0;
+
+      for (counter1 = 1; counter1 <= steps; ++counter1)
+       {
+         x = rand( ); 
+         y = rand( );
+
+         x2 = x / RAND_MAX;
+         y2 = y / RAND_MAX;
+        
+         printf("%7d. Vektor: ( %f , %f )\n", counter1, x2, y2);
+ 
+         if( ( x2 * x2 + y2 * y2) <= 1 )
+         ++hits;
+
+         counter2 = counter2 + x2 + y2;
+
+       }
+
+      pie = (4.0 * hits) / steps;
+
+   printf("\n");
+   printf("\tPie  :\t %1.8f\n", pie);
+   printf("\tProbe:\t %1.8f  (nah an 0.5 ?...)\n\n", counter2 / ( 2.0 * steps ));
+
+return (0);
+}