C

DeitelC/ClassAvarage.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+int main(void) {
+    int total = 0;
+    int counter = 0;
+
+    printf("%s","Enter grades!, -1 to End: ");
+    int grade = 0;
+    scanf("%d", &grade);
+    while(grade != -1) {
+        total = total + grade;
+        counter = counter + 1;
+
+        printf("%s", "Enter grades!, -1 to End: ");
+        scanf("%d", &grade);
+    }
+
+    if (counter != 0) {
+
+    double avarage = (double) total / counter;
+
+    printf("Class average is %.2f\n", avarage);
+    printf("%d ", total);
+    printf("%d ", counter);
+    printf("%.0f", avarage);
+
+
+    } else {
+        puts("Enter a valid number!");
+    }
+}