Grade

#include<stdio.h>
int main()
{
    int num;
    printf("Enter number:\n");
    scanf("%d", &num);
    if(num>=80 && num<=100)
        printf("A+\n");
    else if(num>=70 && num<=79)
        printf("A\n");
    else if(num>=60 && num<=69)
        printf("A-\n");
    else if(num>=50 && num<=59)
        printf("B\n");
    else if(num>=40 && num<=49)
        printf("C\n");
    else if(num>=33 && num<=39)
        printf("D\n");
    else
        printf("Failed\n");
    return 0;

}