Add hw1

hw1/sample_string_reverse.c

@@ -0,0 +1,28 @@
+
+#include <stdio.h>
+int main(int argc, char *argv[])
+{
+	char buf[50];
+
+	printf("Input string to reverse: ");
+	fgets(buf, 50, stdin);
+
+	int max = 0;
+	char *c = buf;
+	while (*c++)
+		max++;
+	max--;
+	buf[max] = '\0';
+	max--;
+
+	for (int i = 0; i < max - i; i++) {
+		int top = max - i;
+		char temp = buf[top];
+		buf[top] = buf[i];
+		buf[i] = temp;
+	}
+
+	printf("Reversed: %s\n", buf);
+
+	return 0;
+}