/* write a program that first reads the number of students in the course
assume that the max capacity of the course is 20
then the program randomly generates grades for each student in the class
store grades in the array of integers and finds the average grade


*/


#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define SIZE 20

int main(){
	int grades[SIZE], i,num_students, sum=0;
	double ave;
	srand(time(NULL));
	printf("enter number of students in your class\n");
	scanf("%d",&num_students);
	//validity of the input
	if(num_students>0 && num_students<=20){
		printf("grades are\n");
		for(i=0;i<num_students; i++){
			grades[i]=rand()%101;
			printf("%d ",grades[i]);
			sum+=grades[i];
		}
		ave=(double)(sum)/num_students;
		printf("\nave grade %f\n",ave);
	}
	else
		printf("INVALID INPUT\n");
	return 0;
}