How to store marks of student in array?

CODE

How to store marks of student in array?

Program to input marks of n students and count nno. Of students got >=80 marks and also count no. of students got marks between 60 and 70.

int main()

{

    int a[10],c=0,c1=0,i,n;

    printf("\n enter number of students(less than 10):");

    scanf("%d",&n);

    for(i=0;i<n;i++)

    {

        printf("\n Enter marks:");

        scanf("%d",&a[i]);

        if(a[i]>=80)

            c++;

        else if (a[i]>=60 && a[i]<=70)

            c1++;

    }

    printf("\n Students got >=80 is %d",c);

    printf("\n students got between 60 and 70 is %d",c1);

}

Output:

enter number of students(less than 10): 5

 Enter marks:78

 Enter marks:89

 Enter marks:97

 Enter marks:34

 Enter marks:55

 Students got >=80 is 2

 students got between 60 and 70 is 0