Objective H HACKER RANK
In this challenge, we're practicing reading input from stdin and printing output to stdout.
In C++, you can read a single whitespace-separated token of input using cin, and print output to stdout
using cout. For example, let's say we declare the following variables:
string s;
int n;
and we want to use cin to read the input "High 5" from stdin. We can do this with the following code:
cin >> s >> n;
The above code reads the first word ("High") from stdin and saves it as string , then reads the second
word (" ") from stdin and saves it as integer . If we want to print these values to stdout, we write the
following code:
cout << s << " " << n << endl;
The above code prints the contents of string , which is the word "High". Then it prints a single space (
), followed by the contents of integer . Because we also want to ensure that nothing else is printed on
this line, we end our line of output with a newline via endl. This results in the following output:
High 5
Task
Read numbers from stdin and print their sum to stdout.
Note: If you plan on completing this challenge in C instead of C++ , you'll need to use format specifiers
with printf and scanf.
Input Format
A single line containing space-separated integers: , , and .
Constraints
Output Format
Print the sum of the three numbers on a single line.
Sample Input
1 2 7
Sample Output
10
Explanation
The sum of the three numbers is .1+2+7=10.
Solution
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {
/*Enter your code here. Read input from STDIN. Print output to STDOUTН*/
int a,b,c;
cin>>a>>b>>c;
return 0;
Output
Test case 0
Test case 1
Test case 2
Test case 3
Compiler Message
Success
Input (stdin)
Download
3 12345678912345 a 334.23 14049.30493
Expected Output
Download
3
12345678912345
a
334.230
14049.304930000
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