Design a program that mimics a digital calculator. Take an integer as input, use a function named sumOfDigits with a pointer to calculate the sum of its digits, and display the result. This simulates the process of manually adding up the individual digits of a number as you would on a calculator.Note: This question helps in clearing Wipro technical coding tests.Input format :The input consists of an integer N.Output format :The output prints an integer representing the sum of digits of N.Code constraints :1 ≤ N ≤ 105Sample test cases :Input 1 :123Output 1 :6Input 2 :5698Output 2 :28Note :The program will be evaluated only after the “Submit Code” is clicked.Extra spaces and new line characters in the program output will result in the failure of the test case.Marks : 10Negative Marks : 0
Question
Design a program that mimics a digital calculator. Take an integer as input, use a function named sumOfDigits with a pointer to calculate the sum of its digits, and display the result. This simulates the process of manually adding up the individual digits of a number as you would on a calculator.Note: This question helps in clearing Wipro technical coding tests.Input format :The input consists of an integer N.Output format :The output prints an integer representing the sum of digits of N.Code constraints :1 ≤ N ≤ 105Sample test cases :Input 1 :123Output 1 :6Input 2 :5698Output 2 :28Note :The program will be evaluated only after the “Submit Code” is clicked.Extra spaces and new line characters in the program output will result in the failure of the test case.Marks : 10Negative Marks : 0
Solution
Here is a simple C++ program that fulfills your requirements:
#include<iostream>
using namespace std;
int sumOfDigits(int *num) {
int sum = 0;
while(*num > 0) {
sum += *num % 10;
*num /= 10;
}
return sum;
}
int main() {
int N;
cin >> N;
cout << sumOfDigits(&N);
return 0;
}
This program works as follows:
- It includes the necessary libraries.
- It defines a function
sumOfDigitsthat takes a pointer to an integer as an argument. This function calculates the sum of the digits of the number pointed to by the pointer. - In the
mainfunction, it takes an integerNas input. - It calls the
sumOfDigitsfunction with the address ofNas the argument (which is effectively a pointer toN), and prints the result. - It returns 0 to indicate successful termination of the program.
This program should be able to pass the Wipro technical coding test.
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