initial

1sem/programming basics/2/0.cpp

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+// pb_2_0.cpp
+// Горбацевич Андрей
+#include <stdio.h>
+using namespace std;
+
+int main() {
+    long a, b;
+    printf("Input `a` and `b` >>>");
+    scanf("%ld %ld", &a, &b);
+    long sum = a + b;
+    long diff = a - b;
+    long multiplication = a * b;
+    printf("Sum(%%ld): %ld \nMultiplication(%%10ld): %10ld \nDifference(%%-10ld): %-10ld\n",
+           sum, multiplication, diff);
+    double mean = (float)(a + b) / 2.f;
+    printf("Mean:\n%%f: %f\n%%15.4f: %15.4f\n%%-15.4f: %-15.4f\n%%0.15f: %0.15f\n%%30.15f: %30.15f",
+           mean, mean, mean, mean, mean);
+}

1sem/programming basics/2/1.cpp

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+// pb_2_1.cpp
+// Горбацевич Андрей
+#include <stdio.h>
+#include <cmath>
+using namespace std;
+
+int main() {
+    double x1, y1, x2, y2, x3, y3;
+    printf("x1 y1 x2 y2 x3 y3 >>>");
+    scanf("%lf %lf %lf %lf %lf %lf", &x1, &y1, &x2, &y2, &x3, &y3);
+    double S = ((x1 - x3)*(y2 - y3) - (x2 - x3)*(y2 - y3)) / 2.f;
+    //       1  | x1-x3    y1-y3 |
+    //  S = --- |                |
+    //       2  | x2-y3    y2-y3 |
+    printf("S=%f", abs(S));
+}

1sem/programming basics/2/2.cpp

@@ -0,0 +1,14 @@
+// pb_2_2.cpp
+// Горбацевич Андрей
+#include <stdio.h>
+#include <cmath>
+using namespace std;
+
+int main() {
+    int deg;
+    printf("deg >>>");
+    scanf("%d", &deg);
+    int elapsedHours = deg / 30;
+    int elapsedMinutes = elapsedHours*60 + deg / 6;
+    printf("Elapsed hours: %d \nElapsed minutes: %d", elapsedHours, elapsedMinutes);
+}