How to add a period at the end of the sequence in stead of a comma?-CodePudding

This is my code:

#include <iostream> 

using namespace std; 

int main() {
    int fib[10];
    fib[0] = 0;
    fib[1] = 1;

    for (int i = 2; i < 10; i  ) {
        fib[i] = fib[i - 1]   fib[i - 2];
    }

    for (int i = 0; i < 10; i  ) {
        cout << fib[i] << ", ";
    }

    return 0;
}

And this is the output:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34,

But I want to replace the comma after 34 with a period. How would I do that?

CodePudding user response：

Change the print for loop to:

for (int i = 0; i < 10; i  ) {
        cout << fib[i] << (i < (10 - 1) ? ", " : ".");
    }

CodePudding user response：

I like to handle it by printing the comma before the number rather than after it (except for the first number in the list) like this:

for (int i = 0; i < 10; i  ) {
    if (i > 0) cout << ", ";
    cout << fib[i];
}
cout << ".";

CodePudding user response：

Branchless version:

const char* sep = "";
for (auto e : fib) {
    std::cout << sep << e;
    sep = ", ";
}
std::cout << ".";

Demo