Task2

#include<stdio.h>
int main()
{
    int n;
    printf("Enter your marks: ");
    scanf("%d", &n);
    switch(n/10) {
       case 10:
       case 9:
       case 8: printf("A+");
       break;
       case 7: printf("A");
       break;
       case 6: printf("A-");
       break;
       default: printf("F");
    }
    return 0;
}