MP_01 umgekehrte Rekursion

01_ENV/build-c.sh

@@ -1,4 +1,4 @@
 #!/usr/bin/env bash
 bash clean.sh
 clang-6.0 -c func1.c main.c
-clang-6.0 -s func1.o main.o -lm
+clang-6.0 -s func1.o main.o -lm

01_ENV/func1.c

@@ -4,24 +4,24 @@
 #define func1
 
 int func3(int x) {
-    return pow(x, 3) - 3 * pow(x, 2) - x + 3;
+    return (x-2)*(x-4)*(x-11)*(x-18);
 }
 
 int func2(int x) {
     return pow(x, 4) - 5 * pow(x, 3) + pow(x, 2) + 5;
 }
 
-int recurse1(int count) {
+void recurse1(int count) {
     if(count >= 0) {
-         printf("Recurse 1: %d", func3(count - 1));
-         return recurse1(count - 1);
-    }else return 0;
+         printf(" %d", func2(count));
+         recurse1(count - 1);
+    }
 }
 
 
-int recurse2(int count) {
+void recurse2(int count) {
     if(count >= 0) {
-         printf("Recurse 2: %d", func3(count - 1));
-         return recurse1(count - 1);
-    }else return 0;
-}
+         recurse1(count - 1);
+         printf(" %d", func2(count));
+    }
+}

01_ENV/func1.h

@@ -1,5 +1,5 @@
-int func3(int x);
 int func2(int x);
+int func3(int x);
 
 int recurse1(int x);
 int recurse2(int x);

01_ENV/main.c

@@ -4,7 +4,6 @@
 
 int global = 8150;
 
-
 int sum(int,int);
 
 int sum(int a, int b) {
@@ -16,8 +15,8 @@ int sum(int a, int b) {
 int main(int argc, char **argv) {
   int local=4711;
   printf("Hello, world!\nglobal=%d local=%d\n", global, local);
-  printf("Funktion 1: %d\n" ,func3(2));
   printf("Funktion 2: %d\n" , func2(2));
+  printf("Funktion 3: %d\n", func3(2));
 
 
   int tmp = 0;
@@ -35,19 +34,19 @@ int main(int argc, char **argv) {
   }
 
   printf("While: %d\n", tmp);
-
+  
   tmp = 0;
   int zeroes = 0;
-  for(int i = 0; i <= 5; ++i) {
-      int func = func3(i);
-      tmp += func;
-      if(tmp == 0) zeroes++;
+  for(int i = 0; i <= 20; ++i) {
+      if(func3(i) == 0) zeroes++;
   }
   printf("Nullstellen: %d\n", zeroes);
   
   
   recurse1(20);
+  printf("\n");
   recurse2(20);
+  printf("\n");
   
   local = sum(global, local);
   return local;