Nested 'if' Statements

Part of the Fundamentals section of Coddy's Dart journey — lesson 35 of 94.

Nested if statements check conditions inside other conditions, creating complex decision paths. The inner condition only evaluates when the outer condition is true.

void main() {
  int age = 25;
  bool hasLicense = true;
  
  if (age >= 18) {
    print('You are an adult');
    
    if (hasLicense) {
      print('You can drive a car');
    }
  }
}

Output:

You are an adult
You can drive a car

Challenge

Easy

Create a program that determines a student's grade based on their exam score and attendance record:

Declare an integer variable examScore with a value of 78
Declare a boolean variable hasGoodAttendance with a value of true
Use nested if statements to determine the student's grade according to these rules:

If examScore is 90 or above, the grade is "A"
If examScore is between 80 and 89:

If hasGoodAttendance is true, the grade is "B+"
Otherwise, the grade is "B"

If examScore is between 70 and 79:

If hasGoodAttendance is true, the grade is "C+"
Otherwise, the grade is "C"

If examScore is below 70, the grade is "F"

Print the final grade with the exact format: Student grade: X (where X is the determined grade)

Cheat sheet

Nested if statements check conditions inside other conditions. The inner condition only evaluates when the outer condition is true.

if (outerCondition) {
  // Outer code block
  
  if (innerCondition) {
    // Inner code block - only runs if both conditions are true
  }
}

Example:

int age = 25;
bool hasLicense = true;

if (age >= 18) {
  print('You are an adult');
  
  if (hasLicense) {
    print('You can drive a car');
  }
}

Try it yourself

void main() {
  // Declare your variables here
  int examScore = 78;
  bool hasGoodAttendance = true;
  String grade;
  
  // Implement nested if statements to determine the grade

  
  // Print the final grade
  print("Student grade: " + grade);
}