update

A09/1.+Variables+Declaration.c

@@ -0,0 +1,10 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int age;
+	double temp;
+	return 0;
+}

A09/1.1.+Variables+Assignment+-+Initialization.c

@@ -0,0 +1,12 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int age;
+	age = 30;
+	double temp;
+	temp = 26.5;
+	return 0;
+}

A09/1.2.+Variables+-+Priting+Variables+and+Expressions.c

@@ -0,0 +1,13 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int grade1;
+	int grade2;
+	grade1 = 80;
+	grade2 = 100;
+	printf("Average = %d\n", (grade1 + grade2) / 2);
+	return 0;
+}

A09/1.3.+Variables+-+Reading+Input+from+User.c

@@ -0,0 +1,13 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int grade1;
+	int grade2;
+	scanf("%d", &grade1);
+	scanf("%d", &grade2);
+	printf("Average = %d\n", (grade1 + grade2) / 2);
+	return 0;
+}

A09/2.+Variables+Code+Example+no.1.c

@@ -0,0 +1,11 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int num;
+	scanf("%d", &num);
+	printf("num is %d \n", num);
+	return 0;
+}

A09/3.+Find+your+Year+of+Birth.c

@@ -0,0 +1,19 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	int currentYear;
+	int age;
+	int birthYear;
+
+	scanf("%d", &currentYear);
+	scanf("%d", &age);
+
+	birthYear = currentYear - age;
+
+	printf("You were born in %d \n", birthYear);
+
+	return 0;
+}

A09/4.+Calculate+Rectangles+Area.c

@@ -0,0 +1,15 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+#include <stdio.h>
+
+int main()
+{
+	double height, width;
+	double area;
+	printf("Enter height: ");
+	scanf("%lf", &height);
+	printf("Enter width: ");
+	scanf("%lf", &width);
+	area = height * width;
+	printf("The area of this rectangle = %lf\n", area);
+}