Student Grade Program in C++ | Simple if-else Example for Beginners

If you’re new to C++ programming and want to learn how to use conditional statements effectively, this post will walk you through a simple but practical example — a program that calculates a student’s grade based on their marks.

🧠 What You’ll Learn

• How to take input from the user in C++
• How to use if, else if, and else statements
• How to apply logical operators (&&) for range checking
• How to output results clearly using cout

💻 C++ Program Code

Below is the complete code from your uploaded file:

/*  C++ Program to Find Grade of a Student using if else  */

#include<iostream>
using namespace std;

int main()
{
    int a;

    cout << "Enter Student's Marks:: \n";
    cin >> a;
    
    if (a > 90 && a <= 100)
    {
        cout << "Grade A+\n";
    }
    else if (a > 80 && a <= 90)
    {
        cout << "Grade A\n";
    }
    else if (a > 70 && a <= 80)
    {
        cout << "Grade B\n";
    }
    else if (a > 60 && a <= 70)
    {
        cout << "Grade C\n";
    }
    else if (a > 50 && a <= 60)
    {
        cout << "Grade C\n";
    }
    else
    {
        cout << "Grade D\n";
    }

    return 0;
}

🧩 How the Program Works

1. The program first prompts the user to enter a student’s marks.
2. Using if-else conditions, it checks which range the marks fall into.
3. Depending on the marks, it prints out the corresponding grade.
   For example:
   • 91–100 → Grade A+
   • 81–90 → Grade A
   • 71–80 → Grade B
   • 61–70 → Grade C
   • 51–60 → Grade C
   • Below 50 → Grade D

⚙️ Output Example

Input:

Enter Student's Marks::
85

Output:

Grade A

✅ Key Takeaways

• The program demonstrates basic conditional logic in C++.
• It’s a great starting point for learning decision-making structures.
• You can expand it further by:
  • Adding validation for invalid marks (e.g., negative or above 100).
  • Using switch statements or functions for cleaner design.
  • Displaying remarks like Excellent, Good, or Needs Improvement.

🏁 Conclusion

The Student Grade Program in C++ is a perfect beginner exercise to understand how conditional statements work. It helps you practice input/output, logical operators, and decision control — all essential for building more advanced programs later on.