C++ Program to Add Two Numbers Using Function with Explanation
C++
Easy
Functions
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1 min read
165 words
This problem helps you practice core C++ fundamentals in a practical way. It builds intuition around two, function, sum. Let’s break it down step by step so you can implement it confidently.
Problem Statement
Create function that takes two numbers and returns their sum.
Real Life: Like a adding machine that does addition for you.
Input Format
Two integers a and b.
Output Format
Sum of the two numbers.
Constraints
• Integer values
• Result fits in integer range
Concept Explanation
The function adds two numbers and returns the result.
This works like an adding machine that does addition for you.
Step-by-Step Logic
1.Create a function add(int a, int b).
2.Inside the function, calculate sum = a + b.
3.Return sum.
4.In main(), read values of a and b.
5.Call the function and store the returned value.
6.Print the result.
Code Solution
This explanation is written for learning purposes and to help beginners understand the concept clearly.
int addNumbers(int a, int b) {
int sum = a + b;
return sum;
}
void function_q1_add() {
int num1 = 15;
int num2 = 25;
int result = addNumbers(num1, num2);
cout << "Sum of " << num1 << " and " << num2 << " is: " << result << 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
Create function that takes two numbers and returns their sum.
Real Life: Like a adding machine that does addition for you.
Input / Output
Input
Two integers a and b.
Output
Sum of the two numbers.
Constraints
• Integer values
• Result fits in integer range
Explanation
Concept Explanation
The function adds two numbers and returns the result.
This works like an adding machine that does addition for you.
Step-by-Step Explanation
1.Create a function add(int a, int b).
2.Inside the function, calculate sum = a + b.
3.Return sum.
4.In main(), read values of a and b.
5.Call the function and store the returned value.
6.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
int addNumbers(int a, int b) {
int sum = a + b;
return sum;
}
void function_q1_add() {
int num1 = 15;
int num2 = 25;
int result = addNumbers(num1, num2);
cout << "Sum of " << num1 << " and " << num2 << " is: " << result << endl;
}
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