Added hello world project

hello-world/hello.c

@@ -0,0 +1,32 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "platform.h"
+#include "encoding.h"
+
+int factorial(int i){
+
+	volatile int result = 1;
+	for (int ii = 1; ii <= i; ii++) {
+		result = result * ii;
+	}
+	return result;
+
+}
+
+int main()
+{
+	FILE * out = fdopen(STDOUT_FILENO, "w");
+	int value=0;
+	int res = read(STDIN_FILENO, &value, 1);
+//    FILE * inp = fdopen(STDIN_FILENO, "r");
+	//fprintf(out, "hello world!\n");
+//	int value = 0;
+//    int res = fscanf(inp, "%d", value);
+//	int res = scanf("%d", value);
+	volatile int result = factorial (10);
+	fprintf(out, "Factorial is %d\n", result);
+	printf("End of execution");
+	return 0;
+}