//enter student marks and find grade//
#include<stdio.h>
int main()
{
    int grade;
    printf("Enter the number:");
    scanf("%d",&grade);

    if((grade>=80)&&(grade<=100))
    {
        printf("The grade is A+\n");
    }
    else if((grade>=70)&&(grade<=79))
    {
        printf("The grade is A\n");
    }
    else if((grade>=60)&&(grade<=69))
    {
        printf("The grade is A-\n");
    }
     else if((grade>=50)&&(grade<=59))
     {
         printf("The grade is B\n");
     }
      else if((grade>=40)&&(grade<=49))
      {
           printf("The grade is C\n",grade);
      }
     else if((grade>=30)&&(grade<=39))
     {
         printf("The grade is D\n",grade);
     }
    else
    {
         printf("The grade is F\n",grade);
    }
    return 0;
}