#include <stdio.h>
void main(void)
{
	/* The simple program that finds the class average of  
	   10 students who wrote a quiz using simple for structure */


	int mark, sum, knt;
	float  average; 


	sum = 0;

	/* initialization, testing and updating of control variable  */
	/* done in one for instruction backward			*/

	for (knt = 10; knt > 0; knt--)
	{
		printf("type the %d mark \t:", knt);
		scanf("%d", &mark);
		sum += mark;
		
	}

	average = (float) sum/10;

	
	printf("average = %0.2f \n", average);

}