Answer:
See explaination
Step-by-step explanation:
#include <iostream>
using namespace std;
int main()
{
float marks;
cout<<"Enter your grade value :";
cin>>marks;
if(marks>=90)
cout<<"Your grade is 'A'";
else if(marks>=80&& marks<90)
cout<<"Your grade is 'B'";
else if(marks>=70&& marks <=80)
cout<<"Your grade is 'C'";
else if(marks>=60&& marks <70)
cout<<"Your grade is 'D'";
else
cout<<"Your grade is 'F'";
}