Erster Commit

A10/2.+Sum+of+Arithmetic+Sequence.c

@@ -0,0 +1,20 @@
+//Made by Vlad. Budnitski.
+//AlphaTech - Programming Course.
+
+#include <stdio.h>
+
+int main()
+{
+    float a1, an, Sn;
+    int n;
+    printf("Enter the Initial Term (a1): ");
+    scanf("%f", &a1);
+    printf("Enter the n-th Term (an): ");
+    scanf("%f", &an);
+    printf("Enter the number of elements in the Arithmetic Sequence: ");
+    scanf("%d", &n);
+    
+    Sn = (a1 + an) * n / 2;
+    printf("The sum of your sequence = %.2f\n", Sn);
+    return 0;
+}