intro.c

functional_market/Fundamentals/intro.c

@@ -0,0 +1,50 @@
+#include "intro.h"
+#include <stdio.h>
+#include <stddef.h>
+#include <string.h>
+
+int compute(int input, int (*executor)(int))
+{
+    
+    return executor(input);
+}
+
+void isa(void){ printf("Hello Isabelle!\n");}
+void idky(void){ printf("I don't know you!\n");}
+void bla(void){ printf("Good night Blathers!\n");}
+void tom(void){ printf("Hi Tom Nook.\n");}
+void res(void){ printf("How are you doing Mr. Resetti?\n");}
+
+
+void (*greet(char *name)) (void)
+{
+    if(!name) return idky;
+
+    if (strcmp(name, "Isabelle") == 0) return isa; 
+    else if (strcmp(name, "Tom Nook") == 0) return tom;
+    else if (strcmp(name, "Blathers") == 0) return bla;
+    else if (strcmp(name, "Mr. Resetti") == 0) return res;
+    else return idky;
+}
+
+/*
+int next(int n)
+{
+    return n + 1;
+}
+
+
+#include <stdio.h>
+int main(void)
+{
+    int n = 3;
+    printf("compute(%d, &next) = %d\n", n, compute(n, &next));
+}
+*/
+/*
+int main(int argc, char *argv[])
+{
+    (void)argc;
+    (*greet(argv[1]))();
+}
+*/