#include<stdio.h>
int main()
{
    int a;
    printf("Enter your marks:\n");
    scanf("%d",&a);
    if (a>=80 && a<=100)
    {
        printf("Outstanding! Your grade is \nA+\n");
    }
   else if (a>=75 && a<=79)
    {
        printf("Excellent! Your grade is \nA\n");
    }
     else if (a>=70 && a<=74)
    {
        printf("very good! Your grade is \nA-\n");
    }
     else if (a>=65 && a<=69)
    {
        printf("Good! Your grade is \nB+\n");
    }
     else if (a>=60 && a<=64)
    {
        printf("satisfactory! Your grade is \nB\n");
    }
     else if (a>=55 && a<=59)
    {
        printf("Above average! Your grade is \nB-\n");
    }
     else if (a>=50 && a<=54)
    {
        printf("Average! Your grade is \nC+\n");
    }
    else if (a>=45 && a<=49)
    {
        printf("Below average! Your grade is \nC\n");
    }
    else if (a>=40 && a<=44)
    {
        printf("Pass! Your grade is \nD\n");
    }
    else
    {
        printf("Fail! your grade is \nF\n");
    }
    return 0;
}