Va_args

va_args/Makefile

@@ -0,0 +1,14 @@
+CC = gcc
+CFLAGS = -Wall -O2
+
+TARGET = main.elf
+SRC = main.c
+
+#LDFLAGS =
+
+$(TARGET): $(SRC)
+	@echo CC $@
+	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+clean:
+	rm -f $(TARGET)

va_args/main.c

@@ -0,0 +1,21 @@
+#include <stdarg.h>
+#include <stdio.h>
+
+int sum(int count, ...) {
+    int     total = 0;
+    va_list args;
+    va_start(args, count);
+
+    for (int i = 0; i < count; i++) {
+        total += va_arg(args, int);
+    }
+
+    va_end(args);
+    return total;
+}
+
+int main() {
+    printf("Sum: %d\n", sum(4, 1, 2, 3, 4));
+    printf("Sum: %d\n", sum(2, 100, 200));
+    return 0;
+}