C++ Program to Ternary Operator for Quick Decisions with Explanation
C++
Medium
Operators
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1 min read
139 words
This problem helps you practice core C++ fundamentals in a practical way. It builds intuition around ternary, operator, quick. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Use ternary operator (? :) as shorthand if-else.
Real Life: Quick one-line decisions in code.
Input Format
An integer N.
Output Format
Print
• Positive
OR
• Negative
Constraints
• Integer value
Concept Explanation
The ternary operator (? :) is a short form of if-else.
It makes quick one-line decisions in code.
Step-by-Step Logic
1.Take input number N.
2.Write condition using ternary operator:
• (N >= 0) ? "Positive" : "Negative"
3.If condition is true, first value is chosen.
4.If condition is false, second value is chosen.
5.Print the result.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
void operator_q8_ternary() {
int age = 20;
string result = (age >= 18) ? "Adult" : "Minor";
cout << "Age " << age << " is: " << result << endl;
int a = 15, b = 25;
int max = (a > b) ? a : b;
cout << "Maximum of " << a << " and " << b << " is: " << max << endl;
}
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Solution Guide
Problem
Use ternary operator (? :) as shorthand if-else.
Real Life: Quick one-line decisions in code.
Input / Output
Output
Print
• Positive
OR
• Negative
Constraints
• Integer value
Explanation
Concept Explanation
The ternary operator (? :) is a short form of if-else.
It makes quick one-line decisions in code.
Step-by-Step Explanation
1.Take input number N.
2.Write condition using ternary operator:
• (N >= 0) ? "Positive" : "Negative"
3.If condition is true, first value is chosen.
4.If condition is false, second value is chosen.
5.Print the result.
Details
Common Mistakes
- Misreading input/output format.
- Not handling constraints and edge cases.
- Off-by-one errors in loops.
- Forgetting to reset variables between test cases (if any).
Official Solution
void operator_q8_ternary() {
int age = 20;
string result = (age >= 18) ? "Adult" : "Minor";
cout << "Age " << age << " is: " << result << endl;
int a = 15, b = 25;
int max = (a > b) ? a : b;
cout << "Maximum of " << a << " and " << b << " is: " << max << endl;
}
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