1. #include <iostream>
2. using namespace std;
3.  
4. int main(){
5.     int marks;
6.     cout<<"Enter Your Marks: ";
7.     cin>>marks;
8.     if (marks >= 80){
9.         cout<<"Your Grade is A+";
10.     }
11.     else if (marks >= 75){
12.         cout<<"Your Grade is A";
13.     }
14.     else if (marks >= 70){
15.         cout<<"Your Grade is A-";
16.     }
17.     else if (marks >= 65){
18.         cout<<"Your Grade is B+";
19.     }
20.     else if (marks >= 60){
21.         cout<<"Your Grade is B";
22.     }
23.     else if (marks >= 55){
24.         cout<<"Your Grade is B-";
25.     }
26.     else if (marks >= 50){
27.         cout<<"Your Grade is C+";
28.     }
29.     else if (marks >= 45){
30.         cout<<"Your Grade is C";
31.     }
32.     else if (marks >= 40){
33.         cout<<"Your Grade is C-";
34.     }
35.     else if (marks <= 40){
36.         cout<<"Your Grade is F";
37.     }
38.     else{
39.         cout<<"Enter Valid Marks";
40.     }
41.     return 0;
42. }
43.