1 files changed, 41 insertions, 0 deletions
diff --git a/variable_argument_functions2.c b/variable_argument_functions2.c
new file mode 100644
index 0000000..3c7557a
--- /dev/null
+++ b/variable_argument_functions2.c
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <stdarg.h>
+
+double add(int num_args, ...)
+{
+	va_list my_list;
+
+	double i = 0, sum = 0;
+
+	va_start(my_list, num_args);
+	
+
+	for (i = 0; i < num_args; ++i) {
+		printf("%lf\n",sum += va_arg(my_list, int)); //everytime the va_arg (function?, macro?) is called it grabs the next argument in the list, but it is not smart enough to figure out if it has gone past the last argument
+	}
+
+	va_end(my_list);
+
+	return sum;
+}
+
+
+int main(void)
+{
+	int a = 6, b = 3, c = 1, d = 4, e = 2;
+	double sum;
+
+	sum = add(5,a,b,c,d,e);
+
+	printf("main function end: %lf\n",sum);
+
+	printf("Printf using %%d, with the second paramater being 22 and the third being a+1 which would be 7. \n%d\n",22,a+1);
+	printf("The WARNING message given to me by my clang apple compiler (BUT NOT AN ERROR):\nvariable_argument_functions2.c:32:116: warning: data argument not used by format string [-Wformat-extra-args]\n");
+	//I included the above printf to show that at least with my compiler and most others that this code is valid and will compile.
+	//While this code does throw warnings, there is no error and the program runs as if the 23 was not there. 
+	//the reason for it not throwing any errors is because there is no implementation defined behavior for what were to happen if more arguments are passed
+	//the operation expression still occurs, but the printf does nothing else with it
+
+	return 0;
+}
+