Creating your own macros

Author: georgecatalin

Macros/Creating your own macros/create_macro_for_non_standard_C_code.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+#define UpTo(i,n) for((i)=0;(i)<(n);(i)++) printf("The current step is %d.\n",i)
+#define UpTo1(i,n) for((i)=0;(i)<(n);(i)++)
+
+int main(void)
+{
+    int i;
+
+    UpTo(i,10);
+   
+   UpTo1(i,50)
+   {
+       printf("The current step is %d.\n",i);
+   }
+
+    return 0;
+}

Macros/Creating your own macros/create_macro_with_ternary_condition_operator.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+#define MAX(a,b) ( (a)>(b) ?  (a) : (b))
+
+int main(void)
+{
+    int a=43, b=45;
+
+    printf("The maximum between the two arguments is MAX(%d,%d):%d.\n",a,b,MAX(a,b));
+
+    return 0;
+}

Macros/Creating your own macros/creating_a_macro_from_another_macro.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+#define FOO (BAR)
+#define BAR ("This is interesting")
+
+int main(void)
+{
+    printf("%s.\n",BAR);
+    return 0;
+}

Macros/Creating your own macros/creating_your_own.macros.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+#define PI 3.14
+#define AREA_CIRCLE(r)  ((PI)*(r)*(r)) //place the variable between parentheses to keep the order of operations when replacing it with expressions
+
+
+int main(void)
+{
+
+    double area=0.0;
+    area=AREA_CIRCLE(4);
+
+    printf("The area of the circle is %f.\n",area);
+
+    int c=2;
+    area=AREA_CIRCLE(c+5);
+
+    printf("The area of the circle is %f.\n",area);
+
+    return 0;
+}