First commitHEADmain

1 files changed, 108 insertions, 0 deletions

diff --git a/variable_argument_functions.c b/variable_argument_functions.c
new file mode 100644
index 0000000..8db99df
--- /dev/null
+++ b/variable_argument_functions.c
@@ -0,0 +1,108 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+
+//Function Prototypes
+double add(int num_args, ...);
+void printArray(int num_args, char** types, ...);
+
+int main(void)
+{
+	int v = 6, w = 3, x = 1, y = 4, z = 2;
+	double sum;
+
+	sum = add(5,v,w,x,y,z);
+
+	printf("main function end: %lf\n",sum);
+
+	printf("%d\n",22,v+1);
+	//I included the above printf to show that this code is valid and will compile.
+	//While this code does give warnings, there is no error and the program runs as if the 23 was not there. 
+	//the expression still occur, but the printf does nothing else with them
+
+	char a = 'a';
+	short b = 69;
+	int c = 7;
+	long d = 3009;
+	long long e = 4567889;
+	float f = 3.1;
+	double g = 6.402;
+
+	char* array1[11] = {
+		"char",
+		"short",
+		"int",
+		"long",
+		"long long",
+		"float",
+		"double"
+	};
+
+	printf("%c, %hu, %d, %ld, %lld, %f, %lf\n",a,b,c,d,e,f,g);
+
+	printArray(7, array1, a, b, c, d, e, f, g);
+
+
+	return 0;
+}
+
+void printArray(int num_args, char** types,...)
+{
+	va_list list_of_args;
+	va_start(list_of_args, types);
+
+	for (int i = 0; i < num_args; ++i) {
+
+		if (!strcmp(types[i], "int")) {
+			printf("INTEGER: %d", va_arg(list_of_args, int));
+
+
+		} else if (!strcmp(types[i], "long long")) {
+			printf("LONG: %lld", va_arg(list_of_args, long long));
+
+
+		} else if (!strcmp(types[i], "long")) {
+			printf("LONG LONG: %ld", va_arg(list_of_args, long));
+
+
+		} else if (!strcmp(types[i], "short")) {
+			printf("SHORT: %d", va_arg(list_of_args, int));
+
+
+		} else if (!strcmp(types[i], "char")) {
+			printf("CHAR: %c", va_arg(list_of_args, int));
+
+
+		} else if (!strcmp(types[i], "float")) {
+			printf("FLOAT: %lf", va_arg(list_of_args, double));
+
+
+		} else if (!strcmp(types[i], "double")) {
+			printf("DOUBLE: %lf", va_arg(list_of_args, double));
+
+
+		} else {
+			fprintf(stderr,"ERROR");
+		}
+		printf("\n");
+	}
+	va_end(list_of_args);
+}
+
+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));
+	}
+
+	va_end(my_list);
+
+	return sum;
+}